The B.L.A.—Bagel with Lox and Avocado Recipe

Directions:

1. A short time before serving, mash avocado and add lemon juice. Season with pepper and only a bit of salt, as there will be enough in the lox. Split bagels and spread each half with avocado. Top with lox. Put onion, tomato, and capers (if using) on bottom half, then set top half of sandwich in place. Serve at once.
2. Note: To halve an avocado, run a knife lengthwise around fruit, then twist to separate the two halves. Remove pit by hitting it with the heel of a chef's knife, using just enough force that knife sticks in pit. Then lift knife, with pit attached.