Slightly soften frozen yogurt and ice creams at room temperature for 10 minutes.
Press alternating layers of frozen yogurt and ice cream flavors into 6-cup ring mold, fluted mold or springform pan.
Freeze until firm (about 30 minutes).
To unmold, briefly dip mold in hot water to loosen sides, then turn out onto serving plate.
Slice and serve with warm Chocolate Espresso Sauce.