Gather the necessary ingredients:

Cocaine: This is the main ingredient of crack cocaine. It can be obtained from a dealer or other source, but be aware that it may be contaminated with impurities.
Baking soda: This is used as a base for the mixture and helps to create the crack-like form.
Water: This is added to help dissolve the baking soda and make the mixture easier to handle.

Mix the ingredients:

Combine one teaspoon of baking soda with two tablespoons of water in a small bowl or container. Stir until the baking soda has dissolved.
Add one gram of cocaine to the mixture and stir well. Be careful when handling the cocaine as it may be contaminated with impurities that can cause harm.

Heat the mixture:

Place the mixture in a heat-resistant glass pipe or similar item. This will help to create the crack-like form by evaporating the water and baking soda.
Use a flame from an open flame source, such as a candle or lighter, to heat the mixture. Hold the flame close enough to the mixture so that it starts to vaporize.

Collect the crack:

Once the water and baking soda have been fully vaporized, remove the glass pipe or item from the heat source.
Allow the mixture to cool and form a solid. This can take several minutes depending on the temperature and humidity of your environment.
Once the mixture has cooled enough, break it into small pieces known as crack rocks.