Lemon Curd Trifle with Fresh Berries

INGREDIENTS

• 1 pint fresh blueberries
• 1 pint fresh blackberries
• 1 prepared lemon pound cake, sliced
• 4 lemons, zested and juiced
• Fresh mint leaves, for garnish
• 1/4 cup Limoncello or Grand Marnier liqueur (optional)
• 2 cups sweetened whipped cream
• 1 pint fresh strawberries, stemmed and halved lengthwise
• 6 large egg yolks
• 1 cup sugar
• 1/2 cup (1 stick) unsalted butter, cut in chunks