Interesting thing about Lactarius deliciosus is that its actually a diverse complex, there are many different species that are classified under this binomial. Some species in this complex are choice edibles and highly sought after while others are edible but not that good. For example the variety commonly found in California is alright at best, but the species from Colorado and the East Coast of the USA are much more flavorful and delicious. The varieties I've tried from Mexico are also exceptionally delicious but there is also many species within that binomial complex here in Mexico. In Europe L. deliciosus is highly sought after but I've talked to several European immigrants in California that say they don't even bother with it there. I don't believe this is actually in the L. deliciosus complex because it has a bright color, its of considerable size, lacks green staining (which is not always present), and has untypical morpholgy in general. FYI its also not typically that bitter, its tolerable. Below is an a picture I took of L. deliciosus being sold in a market in Mexico.