Bananas [usually have seeds](https://markdaviesseeds.co.uk/content/images/thumbs/0002658_1000-seeds-bulk-edible-banana-plants-seeds-musa-balbisiana-var-balbisiana_550.jpeg). However, the bananas that we know from the supermarket are grown from cuttings of a plant which has mutated in a way that makes it infertile. So it grows all the organs needed for seeds, but there are no seeds. That leaves [small little black specks in place of the seeds](https://q7i2y6d5.stackpathcdn.com/wp-content/uploads/2015/12/banana-seed-400×267.jpg), which is probably what you noticed in your banana bread.
The veins, from the banana.
If you cut ripe banana slices, you can see the Y that the 3 lobes of the banana cylinder grows in. Each lobe has a vein that transports nutrients during the growing process. You can see the veins as black dots that are more obvious, the further along the ripening process that particular banana is.
Making GOOD banana bread, you should be using over ripe bananas. As they ripen, and go beyond that, the vein turns black (from oxidation, I think).
Latest Answers