fake; phony; false;
something that is artificial or counterfeit.
Never buy ersatz lemonade. Always make sure it has lemon juice. Some brands are all sugar.
ersatz reminds of err.
an err is a mistake.
we mistake fake for real.
The bug problem went away when we got ersatz flowers. No one was happy because we missed the aroma the office.
(c) 2015 E. Carruthers