GGB Par level
The set quantity a station or store holds between deliveries: expected usage plus a safety buffer.
A par level is the standing quantity of an item you decide to hold, sized from real usage between deliveries plus a buffer for a busy day. Ordering becomes arithmetic instead of guesswork: par minus what is on hand. Pars set too high tie up cash and invite spoilage; pars set too low produce 86'd items in the middle of service.
Par = expected usage between deliveries + safety buffer
Order quantity = par - stock on hand, counted at the same point in every cycle.
Illustrative: a kitchen uses 20 kg of rice between twice-weekly deliveries and holds a 5 kg buffer, so par is 25 kg. With 9 kg on the shelf at count, the order is 25 - 9 = 16 kg. No debate, no stockout, no dead cash on the shelf.
Build par sheets into your SOPs