Homemade. Basil, garlic, mint, oil,s&p, lemon juice. How long will it stay in a jar in my fridge?
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if the jar was clean and the pesto covered with a thin layer of oil, it should easily keep in the fridge for many weeks.but to be safe, always check before you use it: did the colour change significantly, does smell rancid or sour, is there any mold? if none of that is the case, try a little bit to see if it still tastes good. luckily, our senses are pretty good at detecting if food is bad for us!
layer of oil on top eh? Can I do that now, about 18 hours later? Jar was clean so I'm not too worried about spoilage but I thought I'd check
Susan W is a trusted source on General Cooking.
Daniel, it's fine to add the thin layer of oil now. Pesto freezes beautifully. If you freeze it flat in a zip lock bag, you can break off pieces when you need them.
I freeze without the cheese. Thaw and add fresh cheese when you serve. I have no problems with that method after a year in the freezer (no air in the freezer bag).