OSRS Calc FIELD GUIDE · boost
OSRS Thieving Boosts: Reliable and +5 Options
Thieving's strongest reliable consumable boost is +3 from summer sq'irkjuice; yellow-spice stew can reach +5 randomly, and visible boosts do not stack.
A boost may unlock the action, not the success rate you expect
Reaching the displayed requirement does not guarantee fast pickpockets or low failure. For repeated training, permanent levels usually matter more than a temporary unlock.
Can I boost it?
This checks level reachability only. Confirm the activity accepts temporary boosts before committing supplies.
Available Thieving boosts
Bandit's brew and spring sq'irkjuice give +1, autumn sq'irkjuice gives +2, and summer sq'irkjuice gives +3. Yellow-spice stew can randomly change Thieving by -5 to +5.
The boost decays on the shared non-combat timer. Because that timer is already running before you drink, the first level can disappear in less than a minute.
Use +5 only when the retry cost is justified
Spicy stew is useful for a one-time diary or construction-style unlock, but repeated random rolls create real time cost. The planner distinguishes the reliable route from the maximum possible route.
Plan Thieving XP
Calculate how long it takes to make the requirement permanent instead of repeatedly boosting.