In Leek Factory Tycoon , “hot” means:
: Keep these levels high to process raw leeks instantly.
: Focus your prestige points on Factory Production and Product Refining . This provides the highest multiplier for your idle income.
Progression will slow down drastically once you transition from Golden Leek to Ultraleek and Quantum Leek tiers. The only way to break through this wall is the prestige mechanic.