Strange little RYE Pottery lidded bowl - S impressed mark

Hi

A rather odd little lidded bowl by Rye. I wondered as it is so small with a curved inner if it could be say for caviar or Roe?

Doesn't work for an egg or candle with snuffer lid with quite a high wall into the lid.

The mark is one specifically used by Tarquin Cole (son of Walter Cole) in 1978. The S is unusual as Rye decorators marks were generally only used in the immediate post-war years. The main collector's interest is in the 50's and 60's work with their specific decoration.

Could be looks like table service device of some kind but the receptacle is about 5 cm wide and 2 cm deep with the lid cover being about 3.5 - 4 cm high so you couldn't get an egg in the holder and the lid on. A candle maybe I suppose but the inside is rounded and it would take too much time to snuff out - would have to be more of a pebble style candle.

I'm still thinking some food stuff but more along the lines of fish eggs or something rare/expensive than butter. If it was for a condiment why the lid for such a small amount of say butter/mustard/salt or the like.