jibult do you have a recipe for bhang? sounds delicious.
Most recipes you can find call for ~1 ounce of bud. Don't worry, though, it's pretty simple to halve all the ingredients to make it work for a half, or even use as little as an 8th (just multiply all of the ingredient amounts by 0.125 to know what to use for an 8th).
Unfortunately, it seems like it might be a wasted effort to try and make single serving Bhang, but it could be done. Just a bit of work for not much in return.
Anyways, this is the basic recipe I've always based my crazy (and sometimes disgusting) cannabis concoctions in:
Bhang Recipe
from Flavors Of India, by Shanta Nimbark Sacharoff
2 cups water
1 ounce marijuana (fresh leaves and flowers of a female plant preferred)
4 cups warm milk
2 tablespoons blanched and chopped almonds
1/8 teaspoon garam masala [a mixture of cloves, cinnamon, and cardamon]
1/4 teaspoon powdered ginger
1/2 to 1 teaspoon rosewater
1 cup sugar
Bring the water to a rapid boil and pour into a clean teapot. Remove any seeds or twigs from the marijuana, add it to the teapot and cover. Let this brew for about 7 minutes. Now strain the water and marijuana through a piece of muslin cloth, collect the water and save. Take the leaves and flowers and squeeze between your hands to extract any liquid that remains. Add this to the water. Place the leaves and flowers in a mortar and add 2 teaspoons warm milk. Slowly but firmly grind the milk and leaves together. Gather up the marijuana and squeeze out as much milk as you can. Repeat this process until you have used about 1/2 cup of milk (about 4 to 5 times). Collect all the milk that has been extracted and place in a bowl. By this time the marijuana will have turned into a pulpy mass. Add the chopped almonds and some more warm milk. Grind this in the mortar until a fine paste is formed. Squeeze this paste and collect the extract as before. Repeat a few more times until all that is left are some fibers and nut meal. Discard the residue. Combine all the liquids that have been collected, including the water the marijuana was brewed in. Add to this the garam masala, dried ginger and rosewater. Add the sugar and remaining milk. Chill, serve, and enjoy.
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A couple of times I just took a cup or two or three of milk, threw it in a pot with about a tbsp of butter on low heat (you don't want the milk to simmer or boil at all). Once the butter completely melted I'd throw in about an 8th of FINELY GROUND nugs into the mixture, keeping it on low heat. I'd stay close to the pot, stirring frequently and ensuring the mixture didn't boil or the milk didn't burn and stick to the pot. If I were you I'd let this go on for at least 15min, but personally I'd normally go for ~1 hour. My general rule of thumb is once your milk has been tainted green for a noticeable length of time, you're good to go. Remove the pot from the heat, pour mixture into a glass or container that can take rapid changes in temperature extremes. Take the glass of weed-milk and let it cool in the fridge.
Once it's adequately cold I suppose you could strain the milk using whatever means available, but I always left the little bits in because they were so finely ground that it didn't feel gritty and I'm never 100% sure all the good stuff gets absorbed into this drink. If you want to make it a true edible, find an awesome flavor of oatmeal and use your milk to make that. I always opted for cinnamon roll-flavored oatmeal when choosing this route.