The Right Way to Ripen Tomatoes
To ripen tomatoes quickly, place them in a brown paper bag with a banana or a few apples. The ethylene gas emitted by the fruit will help the tomatoes ripen fast. Check the bag frequently (every day) because you don't want overripe tomatoes.
Best way to slice a tomato for an unsoggy sandwich: Tomatoes have ovary walls, and when you cut into them, the pulp and juice tend to slosh out. But if you slice a tomato vertically—from the top of the stem down to the bottom of the fruit—the slices will stay firmer, which will keep your sandwich drier. Also, vertically cut tomatoes will not juice up your salad as much.