A while back I bought a tub of manteca- or pork fat- from a local Mexican market. When I first purchased it the lard was fresh and had a butter-like consitancy and it smelled like carnitas (because it's the rendered fat from carnitas). I've used it sparingly here and there, but the problem is I can't remember how long ago I purchased it.
I've keep it refrigerated and today I went in for a spoonful for refried beans and the texture was weird- grainy and clumpy rather than smooth and buttery. There is no expiration date on the tub.
Does anyone know how long manteca lasts? Is it still safe to use given its texture or am I better off throwing it out?
Thanks in advance!