In truth, the hard-boiled eggs are optional.

The sandwich clocks a mere 171 calories.

In other words, have a handful of potato chips on the side.

A pickled tuna-salad sandwich served on a plate.

RealSimple.com.Photo: Mark Lund

Add the mayonnaise and parsley and combine.

Season with 14 teaspoon salt and 14 teaspoon pepper.

Divide the salad among 4 slices of bread and sandwich with the remaining slices.

Cut in half and serve.

2,000 calories a day is used for general nutrition advice.