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Chestnut (''Castanea sativa'') can be a cheaper alternative to oak for barelsbarrels. Chestnut barrels are used by some lambic producers (though generally most lambic barrels are oak).Chestnut allows more gas permeability than oak, and therefore will allow more oxygen transfer than a comparable barrel made out of oak<ref>[http://link.springer.com/article/10.1007/s00217-010-1292-9 Effect of aging in new oak, one-year-used oak, chestnut barrels and bottle on color, phenolics and gustative profile of three monovarietal red wines. Gambuti et al., 2010]</ref>