Check the recipe:

Batter:
1 3/4 cups + 2 tbsp water
1 3/4 cups flour
1 egg
1 tsp baking powder
1/4 tsp salt

Sandwich:
2 thick-sliced white bread
1-2 slices ham
1-2 slices turkey
1-2 slices swiss cheese

Blend all batter ingredients well. Assemble sandwich and cut diagonally (you can use toothpicks to help hold them together). Dip sandwich in batter, and allow excess to drip. Deep-fry sandwich in Canola oil at 365 degrees, about 1 1/2 minutes per side or until golden brown. Remove from oil and allow to drain and cool on paper towels for a couple of minutes. Remove toothpicks, cut in half, sprinkle with powdered sugar, and serve with blackberry preserves