Swap between fresh, active dry and instant yeast — by weight and teaspoons.
| Instant | Active dry | Fresh |
|---|---|---|
| 2 g | 2.5 g | 6 g |
| 4 g | 5 g | 12 g |
| 7 g | 8.8 g | 21 g |
| 10 g | 13 g | 30 g |
All three are the same organism in different forms and moisture levels, so they're interchangeable once you adjust the quantity. Instant is the most concentrated, fresh the least (it's ~70% water).
Instant → active dry: multiply by 1.25. Instant → fresh: multiply by 3. Going the other way, divide. A standard 7 g sachet of instant yeast ≈ 9 g active dry ≈ 21 g fresh.
Teaspoon figures are approximate (yeast packs differently); weigh for best accuracy.