Bris on Rosh Chodesh

The book "Otzar HaBris" (Yossele Weisberg) has a section of halakhot surrounding what is done differently on noted days of the Jewish calendar.

With respect to Rosh Chodesh, he shares two points:

1. Someone who fasts on Erev Rosh Chodesh (the day before Rosh Chodesh, sometimes called Yom Kippur Katan) may eat at a Bris meal, according to some opinions.

2. At the meal for a bris which takes place on Rosh Chodesh, an additional food item should be added to the menu, specifically in honor of Rosh Chodesh.

Next up, a bris on Erev Rosh Hashana.