1 (6-ounce) package fresh raspberries
1/2 cup sugar
1 cup (12 ounces) seedless raspberry jam, such as Tiptree (see Cook's Note)
1 tablespoon framboise liqueur
If you can't find seedless raspberry jam, you can heat 12 ounces of raspberry jam with seeds over medium heat and strain it through a sieve. Be sure to use real jam, not a "fruit spread."