So the last weeks cold brew one of our customers complained saying it tastes watered down, and it’s taste like iced coffee. I’m almost 100% sure it was made to recipe. One of my coworkers tried it and had an allergic reaction. Fast forward to this week... we made the cold brew, very specifically following the recipe, so it’s made right, however, it’s still causing the allergic reaction, it tastes watered down, and it doesn’t have the right consistency. What’s going on??

Recipe: 5lb bag of cold brew ground course. 7 liters inside, 7 liters outside. 20 hour steep.

Update: while talking through y’alls ideas, one of my coworkers said he got new cold brew filters from the back room that had been there for a while. We’re thinking maybe they have dust or residue on them from being back there for so long. Just ordered new filters so we will test our theory next week