Chapter 4. Laws of Meat and Dairy Relevant to the Festival of Shavuot

Heating Dairy Foods on the Hotplate
29. If one wishes to heat dairy foods on the hotplate, it is proper to be careful to cover the hotplate with aluminum foil.

Baking Challot for a Dairy Meal in a Meat Oven
30. It is permitted ab initio to bake pareve challot in a meat oven [even one used for meat within the past twenty-four hours] and to eat them with dairy, provided they were baked in a pareve pan (such as a disposable pan, or on sealed baking paper).

Greeting One’s Rabbi on the Festival Nowadays
31. We learned in the Gemara in Rosh Hashanah, [1] “A person is obligated to greet his rabbi on the Festival.” The Noda BiYehudah [2] wrote that this law does not apply nowadays. However, this is difficult in light of what is explained in the Gemara in Sukkah, [3] which indicates that it does apply nowadays; and this requires further examination. Indeed, in Ye’arot Devash [4] he wrote that, on the contrary, the primary obligation to greet one’s rabbi applies specifically nowadays, when the Temple is destroyed. The law of greeting one’s rabbi applies only to one’s primary rabbi, from whom one acquired most of his wisdom; this is not so common in our times, since most learning is from the books of the Gemara and the poskim. By greeting the leading Torah authority of the generation, one fulfills the mitzvah of greeting one’s rabbi, but there is no obligation to do so.

[1] 16b.
[2] Tinyana (Orach Chaim, siman 94).
[3] 10b.
[4] Derush 12.