Substitute for Capers?

green olives...used many times to substitute...enjoy!

Capers

Capers are the pickled flower buds of a Mediterranean prickly shrub. They are green and range in size from that of a pencil eraser to caper berries that can be as big as a grape. Capers have a strong, slightly bitter taste that is similar to gherkin pickles. They are used extensively in Mediterranean cuisine, especially in Italy, France and Spain. They add zest to salads, sauces and pasta dishes.

Capers are preserved either in a brine or in salt. In the U.S. the brine variety are far more common, but those preserved in salt are considered far superior. If you can find them, pay a little extra money and buy them.

Capers are available in any supermarket. But if you don't have them, chopped pickles can substitute.

www.whats4eats.com/5ing_C.html

Tropaeolum majus - It is widely cultivated, both as an ornamental plant and as a medicinal plant.

Garden Nasturtiums are grown for their flowers, and also because both their leaves and flowers are edible; they can be used in salads, imparting a delicately peppery taste. The seed are also edible, and can be used as a caper substitute.[5]

It is listed as invasive in several areas, including Hawaii, Lord Howe Island, and New Zealand.[4]

I am looking for a substitute for capers. The responses here mentioned 1. green olives (which I rarely have in my frig) the other suggestion, 2.