I’m sure the title of this post isn’t strictly true, but for my sponge cupcakes it applies. I use 4 large eggs to every 225g of flour/sugar/butter. This makes 18 cupcakes.
I started shopping around for cheaper eggs. All large eggs are expensive. Only the medium eggs come in the “value” ranges.
My solution: I weighed large eggs after cracking to find they are usually 60g without the shell. This means I can crack five very cheap eggs into a basin, beat them together and the extract the extra 20g or so. With 10 medium eggs for 90p in Tescos right now and large eggs at £1.60 for 6 this is a massive saving. 45p instead of £1.07.