Hadith 31-72

وَبِهذَا الإِسنادِ قالَ: قالَ رَسُولُ اللَّهِ‏ صَلَّى اللهُ عَلَيْهِ وَآلِهِ: نِعمَ الإِدامُ الخَلُّ، وَلا يُفتَقَرُ أَهْلُ بَيْتٍ عِنْدَهُم الخَلُّ.

According to the same documentation, God’s Prophet (S) said, “Vinegar is excellent. Whoever has vinegar in his house will never be left without anything to eat.”