These are a substitute for the real capers bottled commercially. These are Nasturtium seed capers.
Nasturtium seeds (fresh picked and not sprayed with any chemicals)
To each 2 1/2 cups of vinegar in a saucepan add 3 teaspoons salt and 6 peppercorns (berries). Bring to boiling point. Cool. Strain into sealer or crock. Gather young nasturtium seeds as soon as the blossoms fall and before the seeds get hard. Drop them into prepared vinegar and let stand at least two days before using them.