Milk Liqueur/licor de leite (from The New Portuguese Table by David Leite)
Pour the grappa and milk into an impeccably clean half-gallon glass jar with a tight-fitting lid. Scoop in the sugar, chocolate and lemon. Cover tightly and shake well to help the sugar begin to dissolve. It will look curdled, and it should. Set aside in a cool dark place and shake or stir well every day for 10 days.
Set a cheesecloth-lined colander over a bowl and pour in the mixture. When the mixture has finished draining, squeeze the cloth to release as much liquid as possible, and discard the solids.
Line a sieve with a paper coffee filter (we used ourChemex coffee pot). Pour in the liqueur and let the mixture drip through to a clean bowl–this can take up to 24 hours. Change the filter when it becomes clogged with the residue from the liqueur. (It took me about 24 hours and 4 filters) You can repeat this step once or twice to clarify it as much as possible. (I didn’t)
Pour the liqueur into a clean decanter with a tight-fitting top. It will keep at room temperature for up to 6 months.