if it's to smoke, see above, if it's for ummmm, something else, then get a big knife (crocodile dundee style), heat it right up (ie rest the blade over a gas ring on full flame for a couple of minutes) then chop away. If you're having grief you can put the dope in the microwave for a minute to soften it up but if you do, try and chop it all up in one go. Each time you heat it you're losing some of the sweet stuff. That help any? Happy smoking.

ps, jesus is coming (look busy)