What items were shortages during the war?

Therer are shortages of butter and sugar.

"There hasn't been any butter, or sugar for cupcakes, for a long time. A year, at least."

Coffee and tea had been unavailable since before the occupation.

They'd been having coffee together, as they did many afternoons. Of course it wasn't really coffee, though the mothers still called it that:"having coffee."There had been no real coffee in Copenhagen since the beginning of the Nazi occupation. Not even any real tea. The mothers sipped at hot water flavored with herbs.