I use jelly for biscuits and toast as well as PB&J. I don't want my biscuits tasting like peanut butter. Thus, 2 knives.
I use two different utensils. Not because i care that they mix, its all going to the same place. I use a knife for peanut butter, and a spoon for jelly. I just find it more efficient that way.
I use two separate utensils. I'm uptight when it comes to cross contamination. I also find a spoon works much better for jelly than a knife...
Who uses utensils? I swipe my bread into the peanut butter and then the jelly. I use a straw for spaghetti.
I use a spoon to scoop the jelly and the backside to spread it, wipe the spoon off and use the back of the spoon to get the peanut butter out of the jar and spread it. My wife says I’m “weird”
I use an all natural jelly which is pretty easy to scoop out and spread with a butter knife. I then wipe the knife off and use it for the peanut butter.