Our eight Advent calendar post 2021 is:
A detail from an Icelandic wool embroidery. The embroidery is an antependium and is in really good condition consider it’s age. The technique is surface couching. The background is a linen fabric.
” Laid and Couched Work, is a form of embroidery where a thread (usually wool ) is laid on a ground fabric (usually wool or linen ). This stitch is created by laying a set of ground threads, that work from one side of the pattern to the other. Over these threads, in the opposite direction, are laid another set of threads at regular intervals . These cross threads are then held down by a series of couching stitches . The whole process results in an area completely covered in thread. This technique allows for large areas of pattern to be covered very quickly.” ref. Historical needlework
The yellow wool thread have faded over time, as yellow does, and was originally much brighter. The wool thread is thin and 2-plied.
The embroidery is dated to the 14th century.
We dye our own wool thread to be able to get a thin thread with a bright yellow. Reseda is the plant we use, as they did in the Middle ages too. To get is really neon-yellow, we add a small amount of ammonium. They used urin.
Today the embroidery can be found in the collection of National museum of Denmark.
/ Amica and Maria
CC-by please cred us if sharing the picture.

Weld really is astonishingly yellow, isn’t it?
Indeed it is!