I've had them all and in order, from 1 - 10. 1 being "For the love of God get this taste out of my mouth" to 10-"I could die happy after eating this".
1-year old toe jam scraped lovingly from a tube sock worn in a sweaty hockey players skate for 8 seasons without washing!
2-Vegimite
3-Marmite
4-Bovril
8-Peanut Butter
127-Nutella