Attention unscrews

Hello,
I am as a person reports, in fact very good quality consistent with my yogurt, but the pots when I screw, of that we take one, unscrews desfois, be careful if you have to take to put in your bag your lunches, the only downside, so monitoring, indeed the groove at the bottom often retains sugar, put in the dishwasher, impeccable,
Good recipe has all with different flavors.