Both are correct but "τοματα" is the most usual but "ντοματα" is also accepted as correct.
Most usual? I'd say no one ever says τομάτα!! It's one of those things I suppose... :D
Yes, as I say it to myself I realize I'm saying "ντοματα". I'm afraid it can't be edited now nor deleted. I have reported it and the change necessary so when we are out of Beta and the revisions are done this should be seen to. Thanks D for your help.
Can someone please explain, in which instances do I use 'μία' as opposed to 'ενα'?