Two types of oakAGEING
Only two types of oak: “Sessile” or “Pedunculate” oak
Only two types of oak are used in making casks for Cognac: “sessile” and “pedunculate” oak (Quercus sessiliflora and Quercus pedunculata, respectively). These two types are present in much of Europe.
Sessile oak releases less tannin than pedunculate oak and more methyloctalactones (compounds giving off aromas of wood and coconut).