Orange spice: +/-5 levels randomly. Each dose is independent. Average ~10 stews for +5 boost.
Always +3 boost. Stacks with stew. Requires completing Eyes of Glouphrie quest.
82 base → 90 (Ornate Pool). 83 → 91 (Jewellery Box). 84 → 92 (Portal Nexus).
👆 Enter your values above and click Calculate to get your personalized results.
Discover Exactly What You Can Build With Construction Boosts. Enter your base level, choose a boost method, and see whether you can build your desired POH upgrade — including Crystal Saw stacking, Spicy Stew probabilities, and Tea bonuses. or map out your route with the OSRS construction calculator.
Follow this flow to determine the best boost strategy for your target build.
The Crystal Saw provides an invisible +3 boost that stacks with visible boosts. Obtained from the Eyes of Glouphrie quest. Only works on furniture that requires a saw to build — doesn't work on pools, altars, or certain decorations.
Tea from your POH kitchen provides a visible Construction boost. Clay cups give +1, Porcelain cups +2, and Gold-trimmed cups +3. Reliable and easy to use repeatedly.
Orange spice in a Spicy Stew can boost Construction by +5 (maximum) but it's random. You might get -5 to +5. The chance of getting +5 is approximately 4.5% per attempt with 3 doses.
The most reliable maximum boost: Crystal Saw (+3 invisible) + Gold-trim Tea (+3 visible) = +6 effective levels. This is how most players build Ornate Pool at level 84 instead of 90.
The absolute maximum possible boost: Crystal Saw (+3 invisible) + Spicy Stew (+5 visible) = +8 levels. However, the stew is unreliable — expect many failed attempts.
| Boost Method | Boost Amount | Type | Reliability | Stacks with Saw? | Best Use |
|---|---|---|---|---|---|
| 🔮 Crystal Saw | +3 | Invisible | 100% | N/A (Is the saw) | Always use |
| 🍵 Tea (Clay) | +1 | Visible | 100% | Yes (+4) | Small gap |
| 🍵 Tea (Porcelain) | +2 | Visible | 100% | Yes (+5) | Budget option |
| 🍵 Tea (Gold-Trim) | +3 | Visible | 100% | Yes (+6) | Best reliable |
| 🍲 Spicy Stew | +5 (max) | Visible | ~4.5% | Yes (+8) | High-risk gap |
| 👔 Construction Cape | +1 | Visible | 100% | No (level 99) | Post-99 only |
Crystal Saw (+3) + Gold Tea (+3) = effective level 75. Build the Gilded Altar for Prayer training at level 69 instead of training to 75.
Crystal Saw (+3) + Spicy Stew (+5) = effective level 90. This is one of the most sought-after boosts. Expect an average of 22 stew attempts (~4.5% success rate).
Crystal Saw (+3) + Spicy Stew (+5) = effective level 91. Same boost requirement as Ornate Pool, achievable at level 83.
Crystal Saw (+3) + Spicy Stew (+5) = effective level 95. Build the combined teleport at level 87 instead of grinding to 95.
Crystal Saw (+3) + Spicy Stew (+5) = effective level 92. Access the best portal hub at level 84.
| Boost Type | Example | Stacking | Appearance |
|---|---|---|---|
| Visible | Tea, Stew, Cape | Only one at a time | Level number changes on Skills tab |
| Invisible | Crystal Saw | Stacks with ANY visible boost | Level doesn't change visually |
The Crystal Saw provides an invisible boost — it doesn't change your visible Construction level. This means you can use it alongside any visible boost (Tea, Stew, Cape) for a combined effect. No other Construction boost works this way.
The Crystal Saw only works on objects that require a saw. Pools, altars, and certain decorative objects don't benefit from the Crystal Saw boost. Check the "Requires Saw" column in the boost comparison to verify.
If you only need +1 to +6 levels, boosting with Crystal Saw + Tea is reliable and free. For +7 or +8, the Spicy Stew approach requires patience and multiple attempts. If you need more than +8, you must train higher.
Bring at least 25–30 stews for a +5 boost attempt. With a 4.5% success rate, you'll statistically need ~22 attempts on average.
Keep your POH in building mode with the object hotspot ready. Eat a stew, and if you get the right boost, immediately build. If not, eat another.
Train a kitten into a wily cat, then hunt Behemoth rats in Evil Dave's section of Subterranean Evil Dave's basement for orange spice drops.
Visible boosts drain by 1 level per minute. You have approximately 60 seconds to build after getting a +5 stew boost before it drops to +4.
Make sure all prerequisites (room, other furniture, materials in inventory) are ready before attempting the stew boost. Don't waste a successful boost on preparation.