There is a practice to eat garlic on Shabbat Evening, as mentioned in the Gemara (Baba Kama 82:1) :
בגמ' בב"ק (פב.): "עשרה תקנות תיקן עזרא... ואוכלין שום בערב שבת"
One of the reasons that stands beyond this custom is that it helps males in Periya Ureviya. Can men replace the garlic with ginger that has the same effects and its eater has a good smell from his mouth after eating it? In addition, is the minhag applicable only to a married man?