Adding rice flour to fritter batter makes it crispier due to its low protein content and ability to absorb less oil.
Rice flour is the secret weapon for achieving extra crispy fritters. Unlike all-purpose flour, rice flour contains very little gluten. Gluten development in batter can lead to a chewier, rather than crispy, texture. When rice flour is incorporated, it inhibits gluten formation, resulting in a lighter and more delicate crust. Furthermore, rice flour absorbs less oil during frying compared to other flours. This lower oil absorption contributes significantly to the crispiness and prevents the fritters from becoming soggy. You can substitute a portion of your regular flour with rice flour, typically around 25-50%, to enhance the crispiness of your fritters. Experiment with the ratio to find your preferred level of crispness. Other ingredients that can contribute to crispiness include cornstarch and potato starch, which work similarly to rice flour by reducing gluten development and oil absorption.
Make sure your frying oil is at the correct temperature before adding the batter. Too low, and the fritters will absorb too much oil and become soggy. Too high, and they'll brown too quickly on the outside while remaining undercooked inside. Aim for around 350-375°F (175-190°C) for optimal results.