For the butter
In the kitchen, you have to learn to count, divide, multiply, in short, to do mental arithmetic to get by in case your electric scale decides to let you go.

Thus, 5 grams of butter is equivalent to a teaspoon while 15 grams corresponds to a tablespoon.

So if you need 250 grams of butter, you will know you need 16 tablespoons and 2 teaspoons! And when we talk to you about a nut of butter, that corresponds to 4 grams. While the knob of butter will equal 15 grams.