Tractate Berakhot
The Gemara Berakhot is the study of the blessings our Sages have instituted to pronounce for the consumption of food and drink as well as on various occasions of life, such as the rules of Shema, Amidah, Birkat Hamazon, Kiddush, Havdala and other prayers and blessings.
The Berakhot tractate is the only one of Zeraïm to have a Gemara in the Talmud bavli.