I don't care for jelly unless it's my grandmother's homemade plum. Since that will never happen again, I prefer natural PB only, no jam/jelly or anything resembling jam/jelly.
My grandmother was one of those who didn't believe in following recipes. She was an amazing cook. My dad and I tried to recreate her plum jam many years ago, and we couldn't. She was also one of those who had 'secret ingredients' that she kept to herself. Loved her.
Leetle bit more jelly....but must be on the top of the sandwich....uhhh???? If it is eaten upside down the jelly is not effective as upper palate lube.