
Roast Chicken Stuffing with a Mystery Ingredient (c. 1500)
https://www.culina-vetus.de/2026/08/18/a-roast-chicken-mystery/
B13 To fill a chicken
If you want to fill a chicken, take 3 eggs and boil them hard. Also take parsley and mirren (myrtleberries?) and pound the parsley and mirren and egg well together. Add butter, and also take small grapes that are called rossin (raisins), and fill the chicken. Let it roast, but also add salt to the filling et caetera.
Basically, this is a very familiar recipe. Filling roast chickens with boiled egg is sometimes referred to as ‘the German way’, as opposed to ‘the Italian way’ of using herbs, and it must have been much more widely known than the few recipes that survive suggest given it also shows up in literature. The basic procedure is clear: mash up boiled eggs, add herbs and salt, work in dried fruit, and fill it into the chicken. A similar set of instructions from the Kuchenmaistrey also includes mashed roast apples or pears and raw egg to hold it together, but it envisions filling a meat roast, mentioning poultry only as an afterthought.
This kind of filling would not require cooking, but could absorb meat juices and impart flavour to the bird. I am not convinced of its culinary merits, but it was practical and if you had to stretch your animal protein, it added to the portions as well. The one question that continues to vex me is the second seasoning ingredient mentioned here along with parsley.
The problem with mirren is not its obscurity; it is a common word in Middle High German. The problem is that it cannot possibly mean what it usually does. Mirren, familiar from devotional literature and sermons, is myrrh. Technically, myrrh is edible, but it is bitter and astringent and smells much better than it tastes. I used it in experiments with medieval dental hygiene remedies once and the experience of even a relatively small amount in my mouth is not something I wish to repeat. Admittedly, it is possible that people enjoyed this, of course, and even though this would be the only mention of it in a culinary context in German, the recipe may actually refer to myrrh. It is just extremely unlikely.
The most likely possibility in my opinion is that it means myrtleberry. The German words are close enough to make this confusion fairly common (having brides wear a wreath of myrrh in some poems), and unlike the bitter resin, myrtleberries actually have a history of culinary use. It is still a very uncommon condiment, 1500 is very early for it to show up, and I am not convinced it would work in this recipe. That is something I should try, though.
This leaves the question what else it could be, and at this point I am drawing a blank. It will need looking at herbals and dialect dictionaries to see what other explanations present themselves.
The recipe collection I am currently translating is part of a manuscript now held at the Zentralbibliothek Solothurn as S 392. The entire manuscript looks fascinating, a collection of craft recipes for things like dyes, stains, paints, vanishes, and parlour tricks, but I will limit myself to the culinary recipes in it. The majority of them are in German and were edited and published in Brigitte Weber: Die Kochrezepte der Handschrift S 293, Transkription und Untersuchung einer spätmittelalterlichen Kochrezeptsammlung aus der Zentralbibliothek Solothurn, Gießen 2026.
The manuscript dates to the period around 1490-1510, based on watermarks and handwriting. There is no internal date. The recipes are an eclectic collection, which is not unusual for the medieval manuscript tradition. They were most likely written down in Baden. Some refer to Italian customs which were fashionable at the time while others are solidly in the German tradition.
The collection is sometimes called the oldest Swiss cookbook, a title that is contested because of its origins north of the modern border. The designation makes little sense at the time anyway, given how closely connected the cities of the Confederation were with their neighbours at the time. The recipes clearly were valued in Solothurn, most likely because they were useful.