Beefsteak buffalo funny bottom

[lmayhow]

So I have beeen growing tomatoes outside, I now know that I have not really done this completely right being my first year. The cherry and medium tomatoes are starting to turn red fab fab fab but my beefsteak buffalo plant has corret coloured leaves, watered, fed, this one has fallen off this morning what is happening to the bottom of the tomarto? All of the beefsteak tomatoes seem to have this now that I have look. Wondering if anyone knew what it was always wanting to learn, thank you

[Thelma Sanders]

Nothing to worry about, a lot of the beefsteak toms have fruit like that - it's called catfacing
https://www.youtube.com/watch?v=mUBfXyN7OBM