1.   The wine is aged in oak barrels.

2.   They aged their tequila in oak barrels for longer periods.

3.   This particular whisky is aged in oak barrels used previously for sherry.

4.   The wine is aged for almost a year in oak barrels.

5.   The wine ages in oak barrels.

6.   The wine ferments in oak barrels.

7.   Oak barrels are used for aging the wine.

8.   An early overreliance on oak barrel fermentation of its chardonnay and malbec produced some disappointing wines.

9.   As they lunched on sandwiches on its brick terrace, a winery employee rolled out an oak barrel.

10.   Because chardonnay is so neutral, it quickly picks up oak flavors when it is aged in oak barrels.