First talk to Seedos multiple times to get tons of seeds. Plant and sell them for about 200 choco-coins. This triggers a visit from Taffly. Buy a torch light and ignite the Taffly; immediately use a watering can to douse the fire and the Taffly will turn into a RedHott. RedHotts sell for 2100 choco-coins.

Once you get the Hunter, buy express Taffliess for 600 each and turn them into RedHotts through the immolation method.