Grinding chocolate bars
|Pestle and mortar (tool belt)|
|Inputs (2,165,000)||Outputs (3,570,000)|
5,000 × Chocolate bar (2,165,000)
5,000 × Chocolate dust (3,570,000)
Chocolate bars can be bought off the Grand Exchange then later ground to turn a profit. Each bar costs 433, and takes 0.6 seconds to grind. The buy limit for Chocolate bar is 10,000 per 4 hours, meaning you can do this for two hours, earning 2,810,000 in total.