This flan from rural France is homey and comforting and makes an ideal ending to a hearty meal. In this recipe, fresh rose geranium leaves flavor a fine combination of rhubarb and raspberries.
A day in advance, trim the rhubarb, removing the greenish top of the stems and any leaves. If the rhubarb is late season, old, or thick, pull off the outer strings as you would for celery. Cut the rhubarb into 1-inch dice. You should have about