From Dish Amelia:
Nalewka (Pronounced Nah-Lef-Kah) is a Polish cordial or aged homemade alcoholic tincture. This variety happens to be lemon and honey but you could make it with nearly anything. It is meant to be sipped and is even regarded as having a medicinal purpose; whether to calm the stomach or make you sleep soundly (heh). I got curious about this concoction when my favorite tall Pole described it to me as a popular traditional project. Then messages had to be sent, many questions asked, and a loose recipe transcribed and then tested. Looking through a variety of recipes, I would say this is a Polish version of Limoncello, perhaps. I now want to make a cherry and a ginger one. You know, for medicinal purposes.
1 bottle Spirytus (This is grain alcohol which is scary stuff. One reason this is so easy to make is that you can dilute the alcohol as much as you choose, and a bit at a time) Start with this amount and it will go quite far.
10 lemons, juiced. (The Pole noted to keep at least a seed or two, and as much pulp as possible, as this is a homemade product and this helps to signify this.)
water (You must do this to taste. We started with 1:1, but this was too strong, so we added 200 more ml. (When you make this drink you have to use the metric system.)
a bit more than 1/2 cup honey. (Also to taste)
Pour the honey and a bit of water into a saucepan and heat, so the honey dissolves into the water. Let this cool a bit or put it in an ice bath. Mix all of the ingredients, pour into bottles, shake, and store in the freezer. Serve in tiny glasses and sip.