While the cashews are simmering you can roast the garlic bulb. Cut off the top of the bulb so some of the garlic clove tops are exposed. Wrap the garlic bulb loosely in parchment paper and place on a baking pan or sheet pan. Roast in the oven for 35 minutes or until the garlic clove interiors are soft and slightly golden. We don’t want the garlic to get dark for this recipe, just slightly golden and soft. Usually it’s just the papery part that gets too dark, but if the cloves have dark spots, cut and discard that part. Dark garlic will give an unpleasant bitter taste.