
This light and crispy vegetable fritter recipe has become my go-to summer appetizer whenever I'm entertaining. The delicate tempura batter creates an airy coating around sweet corn kernels and tender zucchini, resulting in fritters that disappear from the plate almost instantly.
I first made these fritters for a backyard gathering when I had an overflow of garden zucchini, and they've become the most requested dish at our summer parties ever since. The Japanese-inspired tempura technique transforms ordinary vegetables into something extraordinary.
Ingredients
- All purpose flour: creates the foundation for our delicate batter structure
- Cornstarch: is crucial for achieving that signature tempura lightness
- Baking powder: provides just enough lift for airy fritters
- Cold egg: helps maintain the proper temperature for crispy results
- Ice cold sparkling water: creates those distinctive tempura bubbles
- Fresh zucchini: adds moisture and a subtle garden flavor
- Sweet corn kernels: provide bursts of natural sweetness
- Green onions: contribute a mild aromatic element
- Vegetable oil with a high smoke point: ensures proper frying
Instructions
- Prepare the vegetables:
- Thoroughly squeeze excess moisture from the grated zucchini using a clean kitchen towel or cheesecloth. This critical step prevents soggy fritters and ensures a crisp exterior. Combine with corn kernels and sliced green onions in a large bowl, distributing the vegetables evenly.
- Create the tempura batter:
- Whisk the dry ingredients in a bowl until fully incorporated. The cornstarch and flour combination is essential for that characteristic tempura texture. In a separate bowl, beat the cold egg lightly before adding ice cold sparkling water. The temperature contrast is vital for creating the perfect batter consistency.
- Combine with minimal mixing:
- Pour the wet ingredients into the dry mixture, using chopsticks or a fork to mix with a light hand. The batter should remain slightly lumpy with visible flour streaks. Overmixing develops gluten and results in tough rather than airy fritters.
- Fold in vegetables:
- Gently incorporate the vegetable mixture into the batter with a folding motion rather than stirring. Each vegetable piece should be coated but still distinct, creating texture in the final fritter.
- Fry to golden perfection:
- Heat oil to exactly 350°F for optimal results. Use a candy thermometer for precision if possible. Drop batter by heaping tablespoons, being careful not to crowd the pan. Maintain oil temperature between batches for consistent results.
- Drain and serve immediately:
- Remove fritters with a slotted spoon and place on paper towels to absorb excess oil. Serve while still hot for the best texture contrast between the crisp exterior and tender vegetables inside.

The combination of sweet corn and zucchini creates a perfect balance of flavor and texture that keeps me coming back to this recipe year after year. I particularly love using freshly harvested corn in late summer when its natural sweetness is at its peak. My children have even developed a fondness for zucchini through these fritters, which I consider a major culinary victory.
Temperature Matters
The secret to perfect tempura fritters lies entirely in temperature control. Using ice cold ingredients for the batter creates steam when it hits the hot oil, resulting in that characteristic light, crispy coating. I keep my sparkling water in the freezer for about 15 minutes before mixing the batter, and I even chill my mixing bowl. This attention to temperature makes all the difference between heavy, oil-soaked fritters and the airy delights this recipe produces.
Make Ahead Options
While these fritters are best enjoyed immediately after cooking, you can prepare components ahead of time to streamline the process. Grate and drain the zucchini up to a day in advance, storing it wrapped in the refrigerator. The dry ingredients can be whisked together and kept at room temperature for several hours. Just remember that once the batter is mixed, you should cook the fritters promptly before the leavening power diminishes.
Dipping Sauce Variations
These versatile fritters pair beautifully with a variety of dipping options. For a traditional Japanese approach, serve with ponzu sauce or tentsuyu tempura dipping sauce. For something with a kick, mix mayonnaise with sriracha and a squeeze of lime juice. My family favorite is a simple blend of soy sauce, rice vinegar, and a touch of honey, which complements the natural sweetness of the corn perfectly.
Seasonal Adaptations
Spring version substitutes fresh peas for corn and adds mint. Summer classic uses peak season corn and zucchini as written. Fall variation incorporates diced butternut squash and sage.

Serve while still hot for the best texture contrast between the crisp exterior and tender vegetables inside.
Recipe FAQ Section
- → How do I make the tempura batter light and crispy?
Use ice-cold sparkling water and avoid overmixing to keep the batter airy and crisp.
- → Can I use frozen corn for these fritters?
Yes, thaw and drain frozen corn before mixing it in to prevent excess moisture.
- → What dipping sauce pairs well with these fritters?
Ponzu, soy sauce, or spicy mayonnaise complement the flavors wonderfully.
- → How do I prevent the fritters from becoming soggy?
Drain fritters on paper towels and serve immediately for best crispness.
- → Can I make these gluten-free?
Swap all-purpose flour for a gluten-free blend for a suitable alternative.
- → Is there a way to add extra flavor?
Add chili flakes or fresh herbs to the batter for an extra burst of flavor.