Open and drain canned peas, or steam frozen peas and allow them to cool. I used 3 cups of frozen peas.
To cube the cheese, I sliced a 250 gram block of Cheddar into 1/4 to 3/8 inch slices, then with 2 slices stacked on the wide side, sliced that into 3 strips.
Take each stack of strips and slice into cubes, add to the peas as you cube the stacks.
To the peas and cheese, add the onion, relish, chopped egg, mayo, and black pepper as desired. (This time I left out the egg and relish, still delicious.)
Mix together and taste, season with salt as desired, then cover and chill for at least two hours before serving.
Serve as a side with any main dish, enjoy.