Portabella mushrooms

Peter Oei (ECO Consult) poei at telebyte.nl
Fri Jan 19 11:41:01 EST 1996

The other contributors are quite right: Portabello mushrooms are A. 
bisporus, brown, allowed to open, but the caps should still be convex. 
Completely flat (opened) mushrooms are too old (from a marketing point of 
Another aspect is the air humidity and air velocity: ideally the 
Portabello's should have scales.

Peter Oei

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