Abstract: Apparatus and associated methods relate to a fermentation monitoring apparatus configured to generate a visual indicia in a fluid well in response to pressure inside a vessel exceeding a predetermined pressure. In an illustrative example, the fermentation monitoring apparatus may include a vessel cap that includes a fluid well holding a quantity of fluid, and at least one fluid communication channel. The fluid well, for example, may receive gas released from the channel via the at least one fluid communication channel when the vessel cap is coupled to a first end of a vessel to define a chamber and a gas pressure in the chamber exceeds a predetermined threshold. Various embodiments may advantageously generate a visual indicium of gas bubbles in the quantity of fluid indicating to a user that the gas pressure in the chamber has exceeded the predetermined threshold.

Abstract: Apparatus and associated methods relate to a fermentation monitoring apparatus configured to generate a visual indicia in a fluid well in response to pressure inside a vessel exceeding a predetermined pressure. In an illustrative example, the fermentation monitoring apparatus may include a vessel cap that includes a fluid well holding a quantity of fluid, and at least one fluid communication channel. The fluid well, for example, may receive gas released from the channel via the at least one fluid communication channel when the vessel cap is coupled to a first end of a vessel to define a chamber and a gas pressure in the chamber exceeds a predetermined threshold. Various embodiments may advantageously generate a visual indicium of gas bubbles in the quantity of fluid indicating to a user that the gas pressure in the chamber has exceeded the predetermined threshold.