I'm going to list several methods that I've come across for cooking crack. I'll start with my favorite method.
You need a shotglass if you're cooking like a quad. Any more and you should get a thick glass or pyrex drinking glass.
Put your coke in the shotglass, I'd put around 7g in a shotglass for reference. Throw in about 2gs of baking soda and fill the shotglass about half full. Stir this up with something.
You do NOT want your mixture to "pop" in the microwave. It gets crack everywhere and is generally not fun to scrape your microwave down. -_-;
Stick it in the microwave for about 5-10 seconds. Pull it out, look at it, you're looking for a SHITLOAD of oil. If you don't think it's enough
put it back in the microwave for about 5seconds or so. After you think you've got all you can get stir your butterknife in the shotglass until you've got all the oil clung on there. You'll probably have to take it out because making a giant rock is somewhat hard.
Spoon and Baking soda
Probably the most common method.
You need: Spoon, baking soda, water, lighter, small knife
You want to use aproximately a 1:4 ratio. Meaning, 1 gram of coke .25 of baking soda.
Put the coke in the spoon, put the soda in the spoon, put enough water to cover it with a little extra. Heat the spoon up. If your shit starts to foam that means it's garbage and is cut with way to much baking soda. You need to be very careful heating it up if it starts to foam, don't let it cool off, keep heating it but not to the point where it's smoking. You want to heat it until there is an oil on the top of the water (this oil is crack). If your shit doesn't foam thats a good thing just heat it up until you see oil. When you stop seeing more oil form you set your lighter down and pick up a small knife. Slowly stir the knife around the oil pile (this takes some practice as if you use an icecube it cools really fast and you have to know what you're doing so for people that don't I'd 86 the icecube). When it starts to get cool you'll notice that the oil is sticking to your knife. Once you get all the oil onto the knife get out your pipe and throw that rock on there (it'll be smooshy until it dries...you don't have to wait for it to dry those wet hits are the best).
The Coffee Pot
I've only seen this used with amounts over an ounce or more so I'm going to use an ounce in this.
You need 1oz coke, 7g baking soda, lots of water, bunsen burner or gas stove, pyrex coffee pot (glass ones work but they get really hot really fast)
You don't need a huge flame to do this at all. Throw all the shit in the coffee pot
fill it about half full of water. Mix it around. Put it on the flame until you see it all bubble up stir it while its bubbling. In about a minute or so you'll start to see that beuatiful oil. Remove from heat,throw some ice in there usually like 12 cubes or so. Stir it some more. I would let this dry for a while on a plate or something.
You need 7g cocaine, ammonia, shotglass, knife
Put the coke in the shotglass, fill it half full with ammonia and stir it. After a minute or two it will turn to oil and stick to the knife. Throw it onto a plate and let it dry for a second. You don't have to I guess, but when I cooked with ammonia I always got about 6 coffee filters, folded them half way and put all my rocks in there and rinsed it off for about 10seconds in the faucet. Then I let them dry.
Spoon and Ammonia
You need 1-3g of coke, ammonia, spoon, lighter, knife
Put the coke in the spoon, cover it with ammonia, heat it up for about 3 seconds until it turns to oil (it turns to oil fast). Scrape oil up with the knife....I would also say you need to rinse this off as well with the above method.