Tempura Fish with Lemon Sauce

• 2 kg fish fillets (sea bream, cod, etc.)
• 500 gr tempura flour
• 1 liter ice-cold beer

For the Lemon Sauce

• 2 cups lemon juice (squash/concentrate)
• 2 cups lime juice (squash/concentrate)
• 2 cups sugar
• A little cornflour dissolved in water

1. For the execution of the recipe, please watch the episode on Youtube.