Under Texas law, an “open container” means a bottle, can, or any other receptacle that contains any amount of alcoholic beverage and that is open, that has been opened, that has a broken seal, or the contents of which are partially removed. Based on this definition, open bottles of wine that are corked would be considered an open container, as would half-empty bottles of any liquor. Drinks in a cup or flask would be considered open containers, even if they have lids like Yeti cups.