Q. Kvod Harav, a couple of questions on Lag Baomer minhagim.
1) Is it true that there is a minhag to make a milchig (milk) seuda on Lag Baomer?

A. Nitei Gavriel (Pesachim 3: 59: 22) quoting Ezor Eliahu, indeed quotes a minhag to eat milchig foods on Lag Baomer. The reason given is that during Sefira days, before the completion of the seven weeks, the Jewish Nation is considered to be still in a state of tumah or impurity similar to a nidda, seeking purification. The final tahara is to be achieved at the time of receiving the Torah on Shavuos.
Since the dam (blood) of a nidda is related to milk production, the process is alluded in eating milchig.
Horav Shlomo Miller’s Shlit’a opinion is that each person should maintain the traditions and minhogim of his family and community.

Rabbi A. Bartfeld as revised by Horav Shlomo Miller Shlit’a