Gusto Goo

Gusto Goo is an item classified as a viscous beverage notable for its unusually high caffeine content. The drink is described consistently across languages as thick in consistency and having a grapefruit-like flavor. The tone of in-game descriptions emphasizes the caffeine level as concerning, suggesting the item is intended to convey potent stimulant properties.

Gusto Goo can only be acquired by trading with Dr. Carson. No other sources of this item are documented in the available materials.

• Physical/ sensory notes: the beverage is viscous rather than watery and is repeatedly compared to grapefruit in taste.
• Chemical/quality note: all descriptions mark the caffeine concentration as unusually high or worrying.
• Acquisition: singular procurement method — trade with Dr. Carson; it is not found or crafted by other means in the cited sources.

Because the available references limit information to flavor, consistency, and acquisition, any mechanical effects, duration, or in-world uses beyond being a highly caffeinated drink are not specified in the sourced material.