Flasks are items added by Ancients Awakened that spread biomes, similar to Thrown Powders. They are all sold by the Lovecraftian, which are sold after completing a certain donation.
Flasks
Forest Flask
The Forest Flask is a flask that that turns Jungle blocks into Forest blocks. It is sold after donating 5 Bunnies.
Purity Flask
The Purity Flask is a flask that turns infected blocks into Forest blocks. It is sold after donating 5 Terra Shards.
Ash Jar
The Ash Jar is a flask that spreads The Inferno. It is sold after donating 5 Dragon Scales.
Darkwater Flask
The Darkwater Flask is a flask that spreads The Mire. It is sold after donating 5 Mire Pods.
Shadow Flask
The Shadow Flask is a flask that spreads The Corruption. It is sold after donating 5 Rotten Chunks.
Blood Flask
The Blood Flask is a flask that spreads The Crimson. It is sold after donating 5 Vertebrae.
Jungle Flask
The Jungle Flask is a flask that turns Forest blocks into Jungle blocks. It is sold after donating 5 Stingers.
Fungicide
The Fungicide is a flask that turns Red Mushroom Biome and Glowing Mushroom biome blocks into Forest blocks. It is sold after donating 5 Jungle Spores.
Spore Bag
The Spore Bag is a flask that spreads the Red Mushroom Biome. It is sold after donating 5 Mushium and drops from Mushroom Monarch.
Glowing Spore Sack
The Glowing Spore Sack is a flask that spreads the Glowing Mushroom biome. It is sold after donating 5 Glowing Mushium and drops from Feudal Fungus.
Ice Flask
The Ice Flask is a flask that spreads the Snow biome. It is sold after donating 1 Ice Machine.
Icemelt Flask
The Icemelt Flask is a flask that turns Snow biome blocks into Forest blocks. It is sold after donating 1 Ice Machine.
Crystal Flask
The Crystal Flask is a flask that spreads The Hallow. It is sold after donating 5 Pixie Dusts.
Void Flask
The Void Flask is a flask that spreads The Void. It is sold after donating 5 Doomite Scraps.
Order Flask
The Order Flask is a flask that turns The Inferno and The Mire blocks into Forest blocks.