At the רֹאשׁ הַשָּׁנָה evening meal, it's customary to eat foods that symbolize a שָׁנָה טוֹבָה - a Good New Year. The bread from הַמּוֹצִיא is dipped in honey and after eating it the יְהִי רָצוֹן is said praying for a sweet new year.
Then one dips an apple in honey, says the Bracha בּוֹרֵא פְּרִי הָעֵץ on the apple and eats some. One then says the יְהִי רָצוֹן again.
There are various other foods that are eaten with their appropriate יְהִי רָצוֹן; one may even add new ones.
One tries to have only sweet items on the menu; no food cooked in vinegar, for example. The custom is to not eat nuts.
One should remember to learn some תּוֹרָה at the Yom Tov meals; some learn a chapter of מִשְׁנָיוֹת מַסֶּכֶת רֹאשׁ הַשָּׁנָה, which has 4 chapters; one for each meal.
Source: Kitzur Shulchan Aruch 129:9
Ktiva Vechatima Tova; wishing you a שָׁנָה טוֹבָה וּמְתוּקָּה
Wednesday, 25 Elul 5776