This is an easier tutorial than my last and it is on homemade rocket engines!
The biggest engine I have made using this method was an I class engine that produced 180N for 2.1 s.
You must begin buy taking a mixture of 65% stump remover and 35% sugar. If you chose to add aluminum or baking powder you would add 60% stump killer, 5% aluminum or baking powder, and 35% sugar.
Next you will mix the mixture with a little water and put it in an old frying pan that you don't want anymore.
With your stove on low gradually heat this mixture for 30 minutes.