Of course, these are really red tomatoes that haven't changed color yet. Green tomatoes are great to make chutneys and relishes out of, not to mention the dish that made the movie famous, Fried Green Tomatoes. You can also ripen them yourself, if you don't like green tomatoes. Store them in a box or in plastic bags with a few holes for air circulation. If you have a cool, moderately humid room, simply place them on a shelf, just keep them out of direct sunlight. They may be stored in the dark. As tomatoes ripen, they naturally release ethylene gas, which stimulates ripening. To slow ripening, sort out ripened fruits from green tomatoes each week. To speed up ripening, place green or partially ripe fruits in a bag or box with a ripe tomato.