hi. i made a clean out the fridge stir fry today. i added a little pinch of red pepper flakes to the hot oil a few seconds before adding vegetation. i have had this can of red pepper flakes for a couple months, and i have never noticed it being very spicy/hot. but today, very hot. (which i loved, i love spicy food.) and it clearly permeated through the oil and made everything delicious. my question, was this a fluke, or does as it to the oil first some how make it spicier?