Blackberry Chicken

Yield:	4 Servings
Categories:

2		Boneless; skinless whole chicken breasts
2	tb	Olive oil
2	tb	Minced shallots
1/4	c	Blackberry vinegar or white wine vinegar
1/4	c	Nonfat chicken broth
1	tb	Blackberry brandy
1	c	Fresh blackberries
2	tb	Plain nonfat yogurt
2	tb	Pureed soft tofu
		Fresh chervil leaves; for garnish