For similar accuracy to what you have with cups and spoons, you don't need to bother making the measurement exactly 300g. A relative was a professional cook.

For similar accuracy to what you have with cups and spoons, you don't need to bother making the measurement exactly 300g. A relative was a professional cook. Butter wrappers are also marked with measurements here, at 25g intervals. That would be accepted for some recipes, but the butter would be measured more carefully when making certain pastries or cakes.