
In Spain horchata de chufa is a summer drink, especially in Valencia. It is served cold, sweet, and thick, almost like a milkshake. It is especially popular at outdoor cafes on hot afternoons.
But there is no reason not to enjoy tigernut milk at other times of year. Think of it as a neat alternative to the usual vegetarian or vegan milks (soy, almond, rice, coconut, etc.). Tigernut milk can be used in all the same ways. You can make vegan hot chocolate with it, or use it as a replacement for milk in all sorts of recipes. You could even make a smoothie out of it (I have). It's also fantastic on its own, sweetened with a little honey and spiced with cinnamon.
Here's a recipe for tigernut milk--really more of a leche de chufa than a true horchata de chufa (Check out La Tienda's recipe if you want to try for a thick, shake-like horchata de chufa). It is necessary to plan ahead for this, as the tigernuts need soaking twenty four hours, but other than that, it's easy.
Here's how to do it:
Soak 1/2 pound of chufa nuts in water for 24 hours
After soaking the chufa should look like this:
Drain them.
Put them in the blender (not a food processor) with one quart of water. Blend thoroughly.
Let the mixture sit at least half an hour.

Line a colander with cheese cloth and place it over a bowl. Pour the
chufa mixture through the strainer. When the milk has gone through,
wrap the cheese cloth around the chufa solids and squeeze out all the
milk you can.
Stir into the milk a heaping tablespoon of honey, or more if you like. Add a dash of ground cinnamon. Stir.
Chill the milk for an hour. Stir
again, and it's ready.
Try to use the tigernut milk the day you make it or the day after, while it's still fresh.

No time to make horchata de chufa? La Tienda sells a good brand of bottled horchata de chufa.