all right jokes aside your gaslighting gave me a mild panic attack. i had to run and check my labels:

then do some research ...

so basically pasteurized orange juice loses a third of Vitamin C content versus fresh Oranges but still has plenty left ...

strawberry jam though ... loses most Vitamin C and what i previously didn't know is it continues to lose whatever is left overtime in storage ... there doesn't seem to be an agreement how much actually is there but i will go with worst case estimate of NONE. my actual bottle of Jam doesn't mention Vitamin C at all and i was unable to find a single label that showed any non-zero amount of Vitamin C even though some websites ( probably falsely ) claim that Strawberry Jam has significant Vitamin C.

so i will make an adjustment to my diet. going to stop buying Strawberry Jam and start eating fresh fruits again - Strawberries, Kiwis, Tangerines etc.

will continue drinking orange juice and using ascorbic acid unchanged.

by the way that strawberry jam doesn't just contain citric acid and sugar - it then also lists Corn Syrup TWICE and that's on top of the sugar. So it separately has added Sugar, Corn Syrup and High Fructose Corn Syrup. and all that for ZERO vitamin C. what a deal LOL.

i had checked my Orange Juice label in the past and that's why i assumed that everything will be fine and never checked the Strawberry Jam label. the lesson is clear - never assume. check or get rekt.

i knew that Vitamins are partially destroyed by heating but losing 1/3 in Juice vs Oranges was not an issue for me. Losing ALL OF IT and then having sugar added THREE TIMES is an issue ! ! !

how hard would it have been to check sooner ? laziness will kill me. i am not exaggerating or being dramatic.