# Yaedols - Stage 4 (technology) internal name `yaedols-mk04` · tier 8 (pY science pack 4, [tier 8](https://factorio.kalzumeus.com/tier/8.md)) HTML page: https://factorio.kalzumeus.com/tech/yaedols-mk04/ ## Cost 3300 units of (1 × [pY science pack 4](https://factorio.kalzumeus.com/item/py-science-pack-4.md), 2 × [Production science pack](https://factorio.kalzumeus.com/item/production-science-pack.md), 3 × [pY science pack 3](https://factorio.kalzumeus.com/item/py-science-pack-3.md), 6 × [Chemical science pack](https://factorio.kalzumeus.com/item/chemical-science-pack.md), 10 × [pY science pack 2](https://factorio.kalzumeus.com/item/py-science-pack-2.md), 20 × [Logistic science pack](https://factorio.kalzumeus.com/item/logistic-science-pack.md), 30 × [pY science pack 1](https://factorio.kalzumeus.com/item/py-science-pack-1.md), 60 × [Automation science pack](https://factorio.kalzumeus.com/item/automation-science-pack.md), 10 × [Military science pack](https://factorio.kalzumeus.com/item/military-science-pack.md)), 450 s each. ## Requires (2) - [pY science pack](https://factorio.kalzumeus.com/tech/py-science-pack-4.md) - [Yaedols - Stage 3](https://factorio.kalzumeus.com/tech/yaedols-mk03.md) ## Leads to (0) - none ## Unlocks (4 recipes) ### Yaedols (`yaedols-4`) - 50 s · tier 8 · productivity modules allowed - Ingredients: 16 × [Yaedols spores](https://factorio.kalzumeus.com/item/yaedols-spores.md), 10 × [Wood](https://factorio.kalzumeus.com/item/wood.md), 80 × [Water](https://factorio.kalzumeus.com/fluid/water.md), 2 × [Fungal substrate](https://factorio.kalzumeus.com/item/fungal-substrate.md), 15 × [Fertilizer](https://factorio.kalzumeus.com/item/fertilizer.md), 2 × [Special fungal substrate](https://factorio.kalzumeus.com/item/fungal-substrate-03.md), 25 × [Biomass](https://factorio.kalzumeus.com/item/biomass.md), 150 × [Nitrogen](https://factorio.kalzumeus.com/fluid/nitrogen.md), 20 × [Urea](https://factorio.kalzumeus.com/item/urea.md), 1 × [Alien bacteria barrel](https://factorio.kalzumeus.com/item/bacteria-1-barrel.md) - Results: 24 × [Yaedols](https://factorio.kalzumeus.com/item/yaedols.md), 1 × [Empty barrel](https://factorio.kalzumeus.com/item/barrel.md) - Made in: Yaedols culture MK 01, Yaedols culture MK 02, Yaedols culture MK 03, Yaedols culture MK 04 - Unlocked by: [Yaedols - Stage 4](https://factorio.kalzumeus.com/tech/yaedols-mk04.md) ### Phase 4 yaedols breeding program (`yaedols-mk04`) - 30 s · tier 8 - Ingredients: 2 × [Yaedols MK 03](https://factorio.kalzumeus.com/item/yaedols-mk03.md), 5 × [Yaedols spores MK 03](https://factorio.kalzumeus.com/item/yaedols-spores-mk03.md), 1 × [Zinc finger fusion proteins](https://factorio.kalzumeus.com/item/zinc-finger-proteins.md), 5 × [Special fungal substrate](https://factorio.kalzumeus.com/item/fungal-substrate-03.md), 15 × [Wood](https://factorio.kalzumeus.com/item/wood.md), 1000 × [Water](https://factorio.kalzumeus.com/fluid/water.md) - Results: 0.003 × [Yaedols MK 04](https://factorio.kalzumeus.com/item/yaedols-mk04.md) (0.3% chance), 0.7 × [Yaedols](https://factorio.kalzumeus.com/item/yaedols.md) (70% chance) - Made in: Yaedols culture MK 01, Yaedols culture MK 02, Yaedols culture MK 03, Yaedols culture MK 04 - Unlocked by: [Yaedols - Stage 4](https://factorio.kalzumeus.com/tech/yaedols-mk04.md) ### Yaedols MK 04 (`yaedols-mk04-breeder`) - 30 s · tier 8 - Ingredients: 10 × [Yaedols spores MK 04](https://factorio.kalzumeus.com/item/yaedols-spores-mk04.md), 50 × [Simik blood](https://factorio.kalzumeus.com/fluid/simik-blood.md), 20 × [Wood](https://factorio.kalzumeus.com/item/wood.md), 2 × [Special fungal substrate](https://factorio.kalzumeus.com/item/fungal-substrate-03.md), 2 × [Adam42 gene sample](https://factorio.kalzumeus.com/item/adam42-gen.md), 400 × [Water](https://factorio.kalzumeus.com/fluid/water.md) - Results: 2 × [Yaedols MK 04](https://factorio.kalzumeus.com/item/yaedols-mk04.md), 0.2 × [Yaedols MK 04](https://factorio.kalzumeus.com/item/yaedols-mk04.md) (20% chance) - Made in: Yaedols culture MK 01, Yaedols culture MK 02, Yaedols culture MK 03, Yaedols culture MK 04 - Unlocked by: [Yaedols - Stage 4](https://factorio.kalzumeus.com/tech/yaedols-mk04.md) ### Yaedols spores MK 04 (`yaedols-spore-mk04`) - 5 s · tier 8 - Ingredients: 1 × [Yaedols MK 04](https://factorio.kalzumeus.com/item/yaedols-mk04.md) - Results: 5 × [Yaedols spores MK 04](https://factorio.kalzumeus.com/item/yaedols-spores-mk04.md) - Made in: Spore collector MK 01, Spore collector MK 02, Spore collector MK 03, Spore collector MK 04 - Unlocked by: [Yaedols - Stage 4](https://factorio.kalzumeus.com/tech/yaedols-mk04.md)