https://www.cutoutandkeep.net/projects/roast-beef-watercress-tea-sandwich • Posted by Jee C.
You'll need horseradish, mayo, very thin whole wheat bread, roast beef, watercress, salt, and pepper.
Mix mayo and horseradish and spread onto slices of bread.
Layer roast beef, salt, and pepper onto slice. TOp with other slice. Trim crusts.
Cut into 3 pieces. Spread mayo to bottom half and sprinkle chopped watercress.