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I eat a banana almost every day. A small banana or half banana, under 30g of carbs, makes a good snack. I don't find that I spike later.
Ripe banana do spike me but lately I have not eaten any. Not because of the spikes just cause I have not had the occasion to. But I do remember noticing spikes after a good banana. Although if I remember right they were not horrible spikes just more than normal from other foods.
Plums and watermelon have been my fruits of choice lately. I already try so hard to avoid table sugar, chocolate, maple syrup, white rice, white bread, etc. I am reluctant to add another forbidden food to my list :)
I don't spike after any fruit if I work it into my meal plan of carbs for that meal. I wouldn 't eat a whole banana, but a few slices on my cottage cheese or yogurt has never spiked me.
It will depend on how much (note "much")banana one eats. I open one and eat half or a quarter of it. This i do when i need to raise my BG by 10 units or so, and especially during the night.
I loathe bananas and will not eat one under any circumstances, even if there's booze in it.
How do you put booze in a banana?
With a blender...
How about banana-brandy loaf?