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As an admirer of tempura, you must also be aware that its main secret is that your Crispy Tempura Batter must be light and so crispy that it shatters in your mouth with every bite. For tempura, you will need flour, starch, and cold water, but with this hack, you can make it even better by adding another natural thickener.
Below is a guide that covers all the details, from using xanthan gum to a step-by-step manual on achieving foolproof tempura. You'll also learn how to cover all the details, from using xanthan gum to fry to a step-by-step manual on achieving it to purchase the powdered form of xanthan gum for restaurant-grade tempura.
What is Tempura?
A tempura is a well-known Japanese cuisine preparation method that involves beating fish and/or vegetable pieces into thin dough and then frying the resulting dough. The most significant feature of a tempura dough is that it should be light in texture and not taint food.
The secret is there in the batter and frying process itself. Normal recipes would consist of flour and starch mixed with extremely cold water, stirred just long enough for tiny lumps to form, lending crunch. These tempuras are great to be served with a side of tentsuyu or soy sauce-inspired condiment or even a ponzu/lime or spicy mayo-inspired condiment.
Today, tempura is considered one of the most versatile dishes in the world of international cuisine. Chefs are now also exploring how ingredients can be used in tempura, including xanthan gum in the batter.

Why Add Xanthan Gum to Tempura Batter?
Although tempura is already a great example of a light and crunchy texture, in some cases the coating will come off the piece of food or the crunch will quickly evaporate altogether. This is where xanthan gum comes in.
Better Adhesion: The addition of xanthan gum ensures a better adhesion of the batter to the vegetables, shrimp or other proteins so that there are no spots where the product is bare.
Extra Crispiness: This ingredient affects its viscosity as a batter will combine with it and thus, will form a thin layer upon frying on top.
More Crunch: You would soften in your regular batter, but with xanthan gum to tempura you’re getting crunch for longer.
Consistency at Every Time: Whether you are frying at home or in a restaurant, the use of xanthan gum ensures consistency.
Ingredients You’ll Need
Here’s what you will need:
For the Batters.
All-purpose flour - structure.
Rice flour or cornstarch – adds extra crispness to the pastry.
Xanthan Gum (¼ teaspoon) – This will add binding properties and help maintain crunch. If you do not have xanthan gum, you can order it online as xanthan gum powder.
Ice-cold sparkling water— the coldness and the bubbles lighten the batter.
Salt – for seasoning.
For Frying - Neutral oil with high smoke point: Examples canola oil, sunflower oil, or grapeseed oil.
For dipping - Traditional soy sauce-based tentsuyu or low-calorie dips like ponzu, or other dip options like spiced mayo or garlic aioli.
Tempura-Friendly
Vegetables: sweet potato, zucchini, broccoli, mushrooms.
Seafood: Shrimp, White fish, Squid.
Some creative choices: cheese sticks, herbs, or slices of fruit.

Step-by-Step: Crispy Tempura Batter with Xanthan Gum
These are the steps to a light, restaurant-style tempura at home:
Step 1: Make Ingredients
Vegetables are washed and sliced even slices. Use paper towels to pat the patties or protein. You will have stored a lot of stuff just to let the pan sit cool until you fry.
Step 2: Combine Dry Ingredients.
Mix in a bowl ½ cup all-purpose flour, ½ cup rice flour or cornstarch, ¼ teaspoon xanthan gum, and a pinch of salt. Mix the xanthan gum with a small amount of water; it needs to be evenly mixed by the stirring. Stir in the xanthan gum very gently, until well.
Step 3: Put in the Sparkling Water. Add 1 cup of ice-cold sparkling water slowly. Stir with chopsticks or a fork in a smooth, even agitation. Don’t over-mix it; it is absolutely okay to see some lumps, which are going to make it more airy.
Step 4: Heat the Oil. Heat the oil in a deep pan or fryer at 340-350°F (170-180°C). Add enough oil to cover the ingredients so they can float around when frying. Step
5: Dip & Fry. Dip vegetables, shrimp, or other foods in the batter. Incorporate vegetables and shrimp so the contents are evenly distributed throughout the batter. Add to the hot oil and shake off the leftover. If you can, fry them in batches until golden brown and crispy (approximately 2-3 minutes).
Step 6: Drain & Serve. Take it out with a slotted spoon and drain on a wire rack or paper towels. Dip together to induce that crunch sensation.
The Science of Xanthan Gum Frying
To explain the efficiency of this invention, we need to investigate what xanthan gum is and the nature and characteristics of it when used (in batter) in batter.
What is xanthan Gum?
Xanthan gum is a vegetable-based polysaccharide that is used to produce thickened sugar and stabilizer products in the food industry. If you’re wondering, “What use is made of xanthan gum?” well, its uses range from preventing salad dressings from separating to providing gluten-free baking with a smooth texture and, in this case, a crispy, light tempura.
How It Works in Tempura.
A pinch of xanthan gum (added to the batter) will help maintain the batter and sticky coating. This, in fact, provides an even layer, making the food crust once fried.
Why It Stays Crispy.
In batter, the oil is absorbed very early, softening the crust. With xanthan gum, though, oil absorption is delayed. This means, of course, that your tempura will be lighter and crunchier.
Contemporary Culinary Uses.
Much like what chefs experiment with the emulsifier sunflower lecithin (you ever wonder what sunflower lecithin is?), since xanthan gum is a molecular gastronomic product, it is not surprising to see its development.
Tips to Get the Right Tempura
Achieving that extra-crispy texture requires more than a great recipe. Here are expert tips that help you get perfect tempura at home:
Keep Everything Cold.
· The batter should be made in ice water or sparkling water.
· Chill the vegetables, the seafood, and even the mixing bowl.
Mix Batter Lightly
· Mixing too much increases the gluten, with the batter becoming heavy.
· Stir the mixture together with chopsticks and fork until it just mixes.
Keep the Oil Temperature Constant.
· Fry between 340-350°F.
· Overheat – a burnt surface, raw interior.
· Too cool – greasy, soggy tempura.
Frying in Small Batches.
· Overcrowding reduces oil temperature — but destroys crispness, too.
Drain Properly.
· Use a wire rack and not a paper towel to set the fried parts in rather than panning them.
· Serve Immediately.
You typically want to eat tempura when hot or directly from the fryer. Even with xanthan gum, the crunch won’t last. Bonus Tip: If you love cooking adventures, do so by mixing this powder together with Xanthan Gum in making new batters with the exact new ingredients that chefs mix sunflower lecithin powder with.

Variations to Try
Gluten-Free Tempura.
Replace the all-purpose flour with rice flour or a mix of gluten-free flours. Because xanthan gum is already an ingredient used in gluten-free cooking, it gives structure and crispness without gluten.
Vegan Tempura.
Tempura, however, isn’t limited to seafood; load up on vegetables like sweet potato, zucchini, broccoli, mushrooms, and even herbs like shiso leaves. The batter, light, makes vegetables come off to the light, and the coating holds beautifully using xanthan gum.
Fusion Tempura.
Take your tempura to the next level with some unconventional ingredients: mozzarella sticks, jalapeños or even thinly sliced apples for a sweet-and-savory treat. The xanthan gum keeps your batter from sticking to its odd shapes.
Playing with Other Additives.
Interested in modernist cooking? Some chefs also throw emulsifiers, such as sunflower lecithin, in to make foams lighter or change textures. If you’ve been wondering what is sunflower lecithin and where to find it, you can buy sunflower lecithin powder and serve as an ingredient alongside xanthan gum. These ingredients allow you to experiment beyond traditional recipes.
Suggestions & Pairings.
Traditional Pairings.
Classic tempura can also be served with tentsuyu, a dipping sauce made from soy sauce, mirin, and dashi. This light, savory sauce doesn’t compete with the delicate crunch of the batter: it enhances the flavor.
Modern Sauces.
For a fusion twist on your tempura, pair it with spicy mayo, garlic aioli, or citrus-based ponzu. These bold dips are especially good with shrimp, fish, or fusion-style vegetable tempura.
As a Side Dish.
Tempura is excellent as an accompaniment to sushi rolls, sashimi, or Japanese noodle dishes like udon and soba. Crisp texture contrasts with a softer flavor profile. Creative Combos. Beyond Japanese dishes, tempura veggies can be placed atop rice bowls, tucked into tacos, or served as crunchy appetizers at parties. With the extra crisp from xanthan gum, these pairings stand tall and dry.
Final Thoughts
Tempura has always been lauded for its light, airy crunch, but a tiny twist of modernity can add up to something greater. By dumping just a pinch of xanthan gum into your batter, your batter hangs on even tighter, fries better, and stays crunchier for longer. It’s an easy, science-based trick that can span the line between tradition and innovation.
So, the next time you cook vegetables, seafood or even a fusion snack, don’t forget the secret to perfect frying might not be out there in the halls of a fridge. If you’ve been wondering what xanthan gum is for or how you can get it, now is the perfect time to find out.

At Cape Crystal Brands, we supply high-quality ingredients that support precision cooking, from natural thickeners and vegan gelling agents to modernist cooking essentials. Whether you need guar gum, soy lecithin, or calcium lactate for spherification, we’ve got you covered.
Shop our specialty ingredients now and elevate your next dish with science and flavor.
Troubleshooting FAQs.
Why Is My Tempura Soggy?
Soggy tempura typically refers to when the oil was not hot enough or when the batter was wet. Keep oil at 340–350°F (170–180°C) and pat your ingredients dry before dipping.
Can I prepare the batter in advance?
It’s better to batter tempura directly before frying. If it stays on for too long, the bubbles and chill are dissipated, so you get a thicker coating. Prepare the ingredients; mix only when ready to fry.
How Much Xanthan Gum Should I Use?
A little goes a long way. About ¼ teaspoon per cup of flour does the job – it improves adhesion and crispness, without making the batter sticky. If you’re new to it, start with a small amount, then give it a slight increase.
How to Choose the Best Oil for Frying Tempura.
Choose a neutral oil with a very high smoke point, such as canola, sunflower, or grapeseed oil. The light flavor of sunflower oil is especially popular in cooking today.
Can I Reheat Tempura and Keep It Crispy?
Yes! Store any remaining tempura on a wire rack under an oven at 350°F (175°C) for 5–7 minutes. Please do not put it in the microwave, as it will make the coating soggy.
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About the Author Ed is the founder of Cape Crystal Brands, editor of the Beginner’s Guide to Hydrocolloids, and a passionate advocate for making food science accessible to all. Discover premium ingredients, expert resources, and free formulation tools at capecrystalbrands.com/tools. — Ed |
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