Barbecued Oysters with Shiitakes

Yield:	1 Servings
Categories:	Seafood, Chinese

1	tb	Chinese oyster sauce
1	tb	Hoisin sauce
2	ts	Ketchup
1/2		Serrano chili, seeded and finely chopped
12	md	To large fresh shiitake caps
		Olive oil
12		Fairly large oysters, shucked