4.

In the same pressure cooker, melt the remaining 4 tablespoons of butter until foamy, about 1 minute. Add the minced shallots and garlic, cooking until tender, about 2 minutes. Add the rinsed rice and gently toast in the butter, about 2 minutes. Pour in the wine and cook until reduced and no raw alcohol taste remains, about 2 minutes. Add the chicken stock, bay leaf, thyme to the pot and season with kosher salt and freshly ground pepper. Add the three reserved cobs to the liquid and close the pressure cooker. Bring to low pressure and cook for 4 minutes.