The Colombian brewer Bavaria is making efforts to increase its stake in the Latin American beer market by offering US$152m to buy up to an additional 25% of the Ecuadorean brewer, Compania de Cervezas Nacionales.   Bavaria already controls 67.5% of the brewer. And, with its 72.5% Cerveceria Andina SA, another Ecuadorean brewer, it controls close to 92% of Ecuador's beer market.