Post #360294 by Scottes on Sat, Feb 9, 2008 6:56 PM

Grey yuck around Orgeat is probably just fine. Homemade orgeat will separate and the lighter, foamy "gray yuck" will float to the top. Shake it up and go. Of course, it depends on how old it is.... I have kept alcohol-free homemade orgeat in a cold (34F) refrigerator for 3-4 months with no issues.

Grey yuck in a grenadine bottle would get thrown out. (All of it, not just the gray yuck.)