Related Clues:

• Perhaps, a submarine course
• Old advertiser's royal links, a lot cut short
• Lunchtime snack, possibly — and port
• Lunchbox item, usually
• Quick meal in Kentish Town
• Two slices with something in between
• Kind of course that provides something to eat between rounds
• Pack in place in Kent
• Sounds like a club for a small snack
• Makes a meal of gritty stuff coming from women's organisation connected to church
• ... but leaving one out of picnic is not so bright
• Picnic snack
• Layered sponge cake
• Common food item
• Something to eat in Kentish Town?