I'm fairly new to aloes, but I'm assuming that this is a new pup. It's growing on the old flower stalk. I was expecting offsets at the base of the plant. So what should I do with this? I don't see any roots, but can I cut it off and plant it?

Aloes are so much fun and there are so many of them! Yes, normal is putting out offsets at the base of Mom. But, sometimes she will put out a plantlet on the flower stalk. You can leave it alone until it gets bigger or cut if off now. Best would be if it developed its own roots first. Sit it on a shelf for a week to dry, then pot it up. Here's one of my Gasteraloes with regular pup and one like yours. Gene

Thanks, Gene - I'll wait until it develops some roots.

The pups that are produced on flower stalks are called bulbils. They will not usually grow roots on the stalk but can be easily rooted by placing them on top of soil and watering infrequently until there is new growth. Just be careful to detach them from the stalk with the minimum damage, and provide protection from direct sun during the rooting process, at least until there is evidence of root activity.

Here is one I started that way over the winter. The rocks I laid in around it helped keep the bulbil seated during the rooting process.