To speed up the ripening process, you could set them on a sunlit windowsill or you could keep them at room temperature in a bowl with a ripe tomato or banana or in a closed brown paper bag for a few days.
किंवा मग काही दिवसांपर्यंत, कच्चे टमाटे जाड तपकिरी रंगाच्या कागदाच्या पिशवीत ठेवा.