'The Ideal Virol Food. VIROL. A preparation of bone-marrow. An ideal fat food for children and invalids'

as it says on the jar. I believe they're called Big Macs these days.

I ate some pretty disgusting things during the 50's but I don't remember Virol. If it tasted as bad as you say, bubblyrat, then it must have had truly life-saving properties.