Back to the kitchen, wench! They are expecting a love-potion, but would seem prudent to concoct a sleeping drink instead. Go to the shelves at the left of the fireplace and take a copper scale-pan from the bottom shelf. Put it on the scale. From the middle shelf you can pick up several herbs. Right-click in your inventory to get a description of each one. From left to right: menthol, unknown leaves, cinnamon, fleshy leaves, anise, and spongy leaves. Well, that's not much help, the recipe calls for crimson (red) and other colors. We will have to test the herbs to see what color they turn when wet. On the table by the door is a wooden bowl. Take it and use it to scoop water from the cauldron. Don't you just love it? She puts a bowl of boiling water in her pocket! What will they think of next?
Anyway, go to the scale and put the coin in the right side. Choose an herb, crush an ounce of it (put it in the weighing-pan, that is) and put it back. Then, in inventory, put the crushed herb into the water bowl to learn what color it becomes. The recipe says one ounce crimson, one of golden, and two of ounce and ounce makes green. We find out that there is no green herb, but we know that blue and yellow create green; thus another yellow and one blue would do the job. Here's the colors: Menthol=white; Unknown=yellow; Cinnamon=red; Fleshy=light brown; Anise=blue; and Spongy=violet. Crushing and adding one ounce at a time, it calls for two cinnamon, two unknown, and one anise. There, the water turns clear. Time to feed the boys.