non côtelées (recette)

[Taz26]

Hi,

Does anyone have any idea what "non côtelées" means in this instance "utilisez des tomates bien mûres pour cette recette, de préférence des tomates rondes, et non côtelées". I can't find it on the net and have no idea what it means? Please help. Thanks in advance.

 

[wildan1]

smooth and round, not irregularly shaped -- literally it means unribbed