u/Capital_Bee_2327

Hello all, I’m looking for some assistance with figuring out what this stuff is coming out of my wall. It’s under my kitchen cabinets just in this one area, pulled off the toe kick to do a thorough vacuum tonight and noticed it. Doesn’t bother me because I don’t access this area often except that I’m curious if this is a sign of some kind of bigger issue. House was built in 1912 but this kitchen was an addition at some point (not sure when but I assume 60+ years ago). I just moved in this past February and am slowly starting to understand the quirks of owning an old home. Thank you kindly!