Stalker noted that the new Delia on the block, a.k.a. Mary Berry , was cooking with fresh mushrooms in her programme Mary Berry Cooks on BBC2 recently.
You can bet with all the attendant publicity around everything she cooks these days there will be a significant bump in demand for the fresh mushrooms.
What was once called the Delia effect may now be known as the 'Berry Bounce' or Berry effect.
Reports that demand for the fresh produce is good at the moment may only be coincidental.