A sieve, or strainer, made of a muslin-like woolen or woolen and cotton material. I have seen an example where a piece of muslin was held firmly between two people who stood at either end of a deep, long receptacle. Into the muslin was poured something which needs to be sieved, say, soup. Each person then inserted a paddle with a flat end which they braced up against the opposing paddle. They then pushed hard against one another, moving the paddles from end to end of the receptacle, pushing the soup through the cloth. Tis is arduous and lengthy but, in Victorian kitchens, resulted in soup of particularly fine quality.