Has a unique mahogany/walnut wood aroma, with some resinous/candilike character and some citrus. Substitutes: Pride of Ringwood with a touch of Goldings and Cascade. This hop will be hard to find in 2008. http://www.midwestsupplies.com/products/ProdByID.aspx?ProdID=7154
According to the substitution chart in BYO this month there is no sub. There have been Simcoe hops for sale on ebay though if you want to go try and win some.