Upgrade Glutton’s Charm through three ranks and it tops out at Speed Eating Lv3. The first rank costs 500z to craft, every rank after that is an upgrade. Some of the materials only come from Chatacabra, Congalala, Doshaguma and four more monsters.
Rank by rank
Glutton's Charm IRarity 2
Speed Eating Lv1: Moderately increases eating speed.
Craftable · 500zGlutton's Charm IIRarity 4
Speed Eating Lv2: Increases eating speed.
Upgrade from previous rank · 1,500zGlutton's Charm IIIRarity 5
Speed Eating Lv3: Greatly increases eating speed.
Upgrade from previous rank · 3,000z