Home Cook
No field, no lab — a shopping list and a bench in your basement.
Where to go
El Cocodrilo (Black Market square) sells the Drug Workstation package, Chemicals Boxes and Cold Medicine. Gas comes from the Chemical plant or El Cocodrilo.
What to gather
Buy 2 Chemicals Boxes, 4 Cold Medicine, 1 Gas, 1 Water. Build the Drug Workstation at home.
Chemicals Box 
Cold Medicine 
Gas 
Water How to process
Drug Workstation: → Meth Batch ($6,000); Batch → 6 Meth Bags. The same bench also bags cocaine, heroin and shrooms.
Meth Batch 
Meth Bag Where to sell
Batch: El Cocodrilo. Bags ($1,300): street dealers.
Meth Batch Meth Bag
TipInputs cost about $1,800 for a $6,000 batch — the best margin in the game, and the reason the police watch the Black Market.