Preparation

• Pass the berries through a food mill fitted with a  fine disk or force them through a fine sieve, mashing with a wooden spoon, into a medium bowl. You’ll have about 1/2 cup purée; set it aside and discard the contents of the strainer. Put the chopped chocolate in a medium bowl. In a small saucepan, heat the cream until just boiling. Pour the hot cream over the chopped chocolate; whisk to blend. Stir in the raspberry purée and the salt. Refrigerate the mixture until completely chilled, about 1 hour.

  A food mill makes quick work of raspberry purée, mashing and straining in one sweep.

• Pour the cocoa powder onto a plate. With a melon baller or spoon, scoop the chocolate and shape it into 1-inch balls. If the truffles are very soft, put them on a baking sheet and refrigerate briefly to firm. Roll the shaped truffles in cocoa, coating them thoroughly. If sealed and refrigerated, the truffles will keep for about a week.