Horntoad said:It's just a mushroom, pluck it out. But I would think if you have a mushroom sprouting your soil may be a little to wet for an aloe.
ge1836 said:I would water less. See how it does. I rarely water my indoor succulents in winter.
They seem dormant then anyway. March is when they begin to grow again.
Good luck with your new plant, it's a great obsession.