How long do prawns need to marinate?
Marination time varies with marinade. Acidic marinades like lemon juice take 30 minutes for marination. But more than 30 minutes of marination may break down the delicate meat and make it less firm. Non-acidic marinades such as olive oil, garlic, herbs, etc. require about one hour for marination and if prawns are put inside the fridge, their marination takes a longer time.