Hi, I'm cooking Chicken Broth (for the 1st time)and the recipe says to use shitake mushrooms and to add them 10mins before the end. I forgot to buy any, can i just use closed cup mushrooms and add them 10mins before the end?? Thanks :-) [[http://www.knorr.co.uk/Recipes/Chicken-Broth.aspx?gclid=CNLur8iCsqQCFYeY2AodV2-Qyg The recipe]]