I store my hot peppers in an airtight mason jar and ensure the lid is completely fastened after each use. I keep it in the fridge and only take it out when needed. You may notice that the Extra Virgin Olive Oil hardens or stiffens up when cold and that's okay! It's completely normal! Just take the jar out 15-20 minutes before you want to use it to soften up the oil a bit, then, use normally. Always remember to top up the jar with fresh olive oil and gently push the peppers down with a fork after each use to ensure that all the peppers are completely submerged in the oil at all times.