It is narrated from Sayyiduna Jabir (may Allah be pleased with him) that once the Prophet (peace and blessings be upon him) asked his family to bring some curry. They said, "We have nothing except vinegar." The Prophet (peace and blessings be upon him) had it brought and ate it, and said, "Vinegar is the best curry."
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 14925
Hadith Gradingحکم دارالسلام:حديث صحيح، م: 2052، وهذا إسناد قوي