Embarking on the "Into the Underworld" main quest in Kingdom Come: Deliverance 2 often leads you to stumble upon the side quest, "Feast for the Poor." This begins with a conversation with Chenyek. After assisting him by defeating Goliath, express your interest in working with him, choosing the option "I’ll drink to it." This officially starts the quest.
Acquire Sigismund's Sausages

With the sausages in hand, your next objective is to deliver one to Beggar Damian, located outside a tavern in southeastern Kuttenberg, near the fast travel point.

Choosing a Path: Knuckles or Chenyek?
You now face a choice: continue assisting Chenyek by finding and providing sausages to other beggars (five sausages per beggar), or switch allegiance to Knuckles and help him sell the stolen wine. The wine is located in the same camp as the sausages, within a chest concealed by a straw structure. Note that this chest requires advanced lockpicking skills.
Regardless of your choice, return to the character you've decided to support to complete "Feast for the Poor." Afterwards, you can pursue other side quests, such as "In Vino Veritas," or focus on the main storyline.
Kingdom Come: Deliverance 2 is available now on PlayStation, Xbox, and PC.