Composite schema

Say I want to add breakfast, lunch and dinner every day with random menus

CREATE TABLE meals
(
   meal_type VARCHAR, -- CustomList('breakfast', 'lunch', 'dinner')
   meal_time  TIMESTAMP, -- Date
   menu VARCHAR -- sentences
)

My current strategy case row%3... for the meal type and this + day(row/3) for my date. my actual problem requires about 17 different required events so this is getting tedious.
Is there a sort of composite schema which allows the multiple rows to be created based on a single random field?