This is a luxurious seafood chow fun dish using shrimp and cooked Dungeness crab meat with Gold Coin Shiitake mushrooms. Abalone sauce compliments this dish, but oyster sauce can be substituted if abalone sauce is not available. I happen to live in an area where freshly cooked Dungeness crab can be obtained seasonally (you just have to take the time to remove the meat from the shell), but you can substitute any cooked crab meat, fresh, frozen, or canned.
Gold Coin Shiitake mushrooms are just small Shiitake mushrooms that can be purchased at your local Asian market or Asian herb store. Small mushrooms are used because they can be eaten whole in one bite, but you can substitute regular sized mushrooms cut into strips if the small mushrooms are not available. The small mushrooms are more expensive than the regular sized Shiitake mushrooms, and they vary in price depending upon the quality of the mushroom. You can get the best quality Shiitake mushrooms at an Asian herb store (with the prices to match), but while Asian markets have lower quality mushrooms in comparison, the mushrooms at Asian markets are still very tasty. The main differences between the mushrooms at the herb store and the Asian market are the appearance and “meatiness” of the mushrooms.
Shiitake mushrooms sold in Asian herb stores are whiter in color than black, with a pattern (resembling a flower, as opposed to being a solid black), are prized and priced accordingly. These mushrooms also are more “meaty” than their counterparts, being thicker and having more texture when eaten than the thinner mushrooms normally sold at Asian markets. Some of the best Shiitake mushrooms sold at Asian herb shops come from Japan and are sold for higher prices than the Asian market mushrooms. Asian markets sell higher grade Shiitake mushrooms, but their best mushrooms do not match the quality found at Asian herb shops. If you’re fortunate enough to have an Asian herb shop near you, I would urge you to go in and explore their dried goods offerings (not just mushrooms, but dried fish maw, shrimp, abalone, cloud ear fungus, and the list goes on…).