Instructions
Prepare the Mushrooms: Clean the mushrooms and remove excess moisture. Trim stems if necessary.
Make the Batter: In a bowl, mix flour, cornstarch, baking powder, and salt. Gradually add water or beer to create a smooth batter.
Coat the Mushrooms: Dip each mushroom into the batter, allowing excess to drip off. For extra crunch, coat the battered mushrooms in panko breadcrumbs.
Heat the Oil: Heat oil in a deep fryer or skillet to 350°F (175°C).
Fry the Mushrooms: Carefully place a few mushrooms at a time in the hot oil, frying until golden brown (about 3–5 minutes). Flip halfway through for even cooking.