A barrel made of wood, in particular oak wood, for containing a liquid, such as wine, the barrel comprising a hollow body closed by two barrel heads, each barrel head comprising an assembly of substantially rectangular wooden battens assembled parallel to one another via facing lateral faces, the barrel being characterized in that the adjacent lateral faces (101, 201) of two assembled-together battens (100, 200) are in intimate leaktight contact, with fibers of the wood of each of said battens being tangled together and held in a matrix of fused intercellular materials.