Thinker is a Brown Ale from Cervezas Silvestres. It has cereals and chocolate both in taste and in aroma, with moderate bitterness, slight sweetness and a moderate ABV.
English Brown Ales are itself a very varied category, ranging from lighter and hoppy to darker and more caramel and roasted beers. Their American counterparts tend to be more hoppy. Malts used are caramel and chocolate, and hops varieties are mostly English. It is a more malty style than British Bitters, and less roast than English Porters, and with less sweetness than London Brown Ales.