Often a recipe will state the size of egg required; if it doesn't, or you have a box of mixed sizes, weigh your eggs and aim for somewhere around 60g-65g. In terms of welfare, supermarket labels ...
Scrambled Eggs Recipe: Creamy, comforting and yet luxurious, start your morning with these divine scrambled eggs. Once you try this foolproof recipe, you won't eat scrambled eggs any other way.