|1 Saltpeter||5 Fire||5 Fireworks||Cabin|
|1 Saltpeter||5 Fire||1 Powder Keg||Foundry|
|1 Saltpeter||5 Fire||10 Fireworks||Ponderosa Lodge|
- Varmint Cannon - Part 1: Build a Foundry is a Goal that requires the Pioneer to obtain 1 Saltpeter.
- Granny's Home II is a Goal which requires the Pioneer to have 4 Saltpeter.
- The Saltpeter is a reward for completing the Manure Collection.
- For real world information on how Saltpeter was made in the past, see this Wikipedia article on Saltpeter