Cornichons au Vinaigre

• 700 g/1½ lb very small gherkins
• 10 black peppercorns

Wipe the gherkins with a clean cloth and place in a jar with the peppercorns and tarragon. Pour in the vinegar, seal the jar and leave for a month before eating the gherkins. If you like, you can add some garlic, chives or small shallots for extra flavour.