Reposado/Rested Tequila: Reposado tequila gets its color one of two ways. You can add it (usually as caramel coloring) to make oro or you can age it. Reposado tequilas get their color the hard way: day by day. Reposados are aged in oak barrels for at least two months, but less than one year. During that time, they absorb some of the characteristics of the wood they’re aged in. And this is where truly complex tequila flavors begin. Some tequila producers age their tequilas in used barrels. Once-used bourbon barrels are popular and add a distinctive flavor. One producer – Asom Broso – ages tequila in used Bordeaux barrels. This gives their reposado a distinctive pink coloration – and a unique smooth flavor.