Oud Bruins, not restricted to, but concentrated in Flanders are light to medium-bodied and deep copper to brown in colour. They are extremely varied, characterized by a slight acetic or lactic sourness to smooth and sweet. A fruity, estery character is apparent with no hop flavour or aroma. Low to medium bitterness. Very small quantities of diacetyl are acceptable. Roasted malt character in aroma and flavour is acceptable, at low levels. Oak like or woody characters may be pleasantly integrated into overall palate. Typically old and new ales are blended, like Lambics.