Advice, merely. Beer is brewed from grain (cereal), malt, hops, yeast and water. It is full of starch and carbohydrates. Those who quaff more than a couple a week would find it wise (if their waistlines want worrying) to eliminate certain other sources of these elements from their diets: no morning Kellogg's, yamless meals, a saladal substitute for a sandwich.
1976, T. C. Nwosu, The Blind Spots of God, Cross Continental Press (1976), →ISBN, page 17:
Parboiled yamless porridge mixed with 'land-army' vegetables and some edible rodents?
If his poem demands no sweet potatoes, then it must go yamless, and to hell with those numbers collected so expensively and assiduously.
2000, Cathy Gant Hill, "Let Others Cook On Turkey Day", News & Record, 22 November 2000:
If you don't feel like cooking this Thanksgiving, that's no reason to go hamless, yamless and - heaven forbid - Spamless.
2003, R. T. Smith, "Twang Chic: Sam Buckhannon Explores the Latest Fashion", in The Hollow Log Lounge: Poems, University of Illinois Press (2003), →ISBN, page 39:
I was lucky with this one, as my roommate's girlfriend left me the aforementioned yams. She took care of this step for me. But if you find yourself yamless, get out and fill your home with a small reminder of the holiday.