The ingredients you use make the batter more crispy. Incorporating leavening agents, such as baking powder or using self-raising flour. Adding cornstarch or rice flour to your batter mixture can increase its crispiness when fried. Maintaining the right frying temperature is crucial. When the batter hits the hot oil, it undergoes a rapid cooking process known as "flash frying." This quick cooking at high heat helps create a crispy exterior while sealing in the moisture inside. Ensure that your oil is heated to 180°C (350°F) before frying.