- Drain peaches and reserve liquid for later use.
- Place peaches in blender container. Whirl on high speed until smooth; pour into small saucepan.
- Combine teriyaki sauce and cornstarch; stir into peaches with sugar, fennel, pepper and cloves.
- Bring mixture to boil over medium heat. Simmer until sauce thickens, about 2 minutes, stirring constantly.
- Remove from heat and stir in garlic powder.