Simmer in a pot with water and star anise very slowly, sort of blanching it before braising it in shaoshin wine, water, soy sauce, rock sugar, brown sugar, and a few white peppercorns.
My most memorable broth from a hotpot was one with oysters. It was not an all-fish hotpot. but rather a mix of everything, including raw oysters. I thought the lamb might dominate the other flavors, but it didn't. The oysters didn't dominate, either, but it was there --- and that broth was wonderful! I've never used blue crab. Were they whole? YEah you have to buy the live blue crab and then cut 'em up. If they have roe it's even better. You can add rice and made congee with the broth at the end and crack and egg into it. I also like the hot pot where you eat lamb/mutton and the broth is sour because of the pickled cabbages so it balances out the taste of the mutton.
Yeah Toad is good. I don't know about Soot Bull Jeep. The women who work there are mean. I know there are other charcoal alternatives in LA, Suhrubal... etc.