It depends on the variety of food you are having, or you may say that the amount will depend on the kind of food on which you are adding it, your taste of preference, the amount of food, other ingredients, recipe of the food, etc. Say, for example, if you are preparing if you are preparing baked chicken for 4 persons and you would like to use paprika in it. In this case, if you use 1 tsp paprika, it will be enough to make your dish tasty. But the same food and same number of people, if you use some different recipe to prepare this, you may need even 2-3 tbsp of it. Again for example, if you want to make tuna fish sandwich for one person, you may need 2 tbsp of sweet pepper, whereas if you go for Hungarian Goulash recipe for the same number of person, i.e. 1, you may need only 1/3 tbsp sweet paprika in it. So it completely varies. It is always recommended that you should follow the recipe instruction to determine the amount of paprika needed for that particular recipe. It will help you to grab the ultimate flavour that you are expecting to have at the end of your journey.