Today is the 40th day of the Omer. It brings us to the level of Hod of Yessod and it is important step in building the vessel to receive the light of Shavuot.
Hod of Yessod completes the vessel of Yessod and tomorrow, Yessod of Yessod is a level that give us easier connection to the supernal. It is a good day to read about Joseph from Zohar Miketz and also from other kabbalaists to draw extra light into our life.
There is a custom to eat dairy products because of the sharing energy. Also the word חלב which is milk in Hebrew has the numerical value of 40.