This article is an excerpt from our Sefer
Buy me here or on Amazon.com
May one eat garlic on Rosh Hashanah?
Background: Customarily, just as certain foods are eaten on Rosh Hashanah to serve as a good omen for the coming year, so too certain foods are avoided due to them containing a negative component. Thus, it is customary not to eat nuts, or sour [or bitter] foods on Rosh Hashanah. Now, the question is asked whether garlic contains any negative competent for which it should be avoided on Rosh Hashanah. The following is the ruling:
 Admur 583:1-5; Michaber 583:1; The Talmudic source of the Simanim is found in Gemara Horiyos 12a. The Gemara mentions the following Simanim: Kara Rubya; Karty; Silka; Tamri. It does not mention the apple, ram, or fish.
 Admur 583:6; Rama 583:2 [“Some do not to eat Egozim as it is the Gematria of sin and causes saliva”]; Darkei Moshe 589:3 in name of Mahril
Other opinions: There were some Poskim that did not avoid eating nuts as well as other foods that increase seed. [Darkei Moshe 583:1 in name of Kol Bo; Kaf Hachaim 583:26]
 M”E 583:3; Kaf Hachaim ibid; Piskeiy Teshuvos 583:5
 Admur 583:2; Teshuvos Hageonim 114 brought in Kaf Hachaim 583:18
 Implication of Tashbatz 118 and Kol Bo 64 [29a] and Darkei Moshe 583:1 that some were accustomed to avoiding garlic just as they avoid nuts; Ketzei Hamateh 583:17; Piskeiy Teshuvos 583:8
The reason: As garlic increase one’s seed and since relations are abstained on Rosh Hashanah therefore these foods are to be avoided. [Implication of Elya Raba 583; See Admur 608:8 regarding Erev Yom Kippur]
 Tashbatz 118 and Kol Bo 64 [29a] in name of Maharam, brought in Darkei Moshe 583:1; Kaf Hachaim 583:26