My usual approach when starting with a mole paste:
1. Simmer in chicken stock until completely dissolved. Canned chicken broth is fine for mole. I doubt anyone will be able to taste the difference.
2. Continue to add more chicken stock until you have the desired consistency - maybe a little thinner so that it can cook down a little.
3. Now comes the fun - where you can doctor it up in all kinds of ways. I may add some Mexican chocolate if I want it sweeter. Or some ground almonds or pepitas.
4. When making chicken or turkey mole, I braise (or even smoke) the meat until it is not quite cooked. I then let it finish cooking in the sauce. I prefer to let sit in the fridge over night and gently reheat before eating.
5. Sprinkling toasted sesame seeds on top of the final preparation gives it a great kick.
6. Leftovers, if any, go into enchiladas or a mole casserole.
I used to be an obnoxious purist about this, making a big deal about doing all from scratch in a molcajete. I still do - maybe once a year for a special occasion - and it is worth all the work. Jarred pastes like Doña Maria still turn me off, but a local Mexican market sells a paste that, with a little doctoring, could pass for the real deal.