This is from forever ago, but:
I broke the nutrient pack Saturday to do an all-grain batch, but this was our first batch and the mash tun we built was definitely faulty and needs to be fixed (permanently stuck sparge due to improper holes in the manifold).
So I figure "I'll use the slappack for an extract brew on Sunday", except the stores are closed so I can't pick up liquid extract.
Will it keep until Monday? Or further than that? (the nearest store is closed monday, too)
Should I just toss the expanded slap pack and buy another one when we can do a proper AG again?