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Carpobrotus glaucescens
I have no idea why this plant is called 'pigface'! It is a succulent coastal groundcover native to temperate eastern Australia. Apparently the fruit pulp is edible, with a flavour like salty strawberry, kiwifruit or banana (depending on what source you read - I'm not game to try it out in case I have the ID wrong and it's some sort of poisonous thing)!! Leaf juice can be applied to marine stings, and it contains local anaesthetic for sunburn, scalds and insect bites.
We just call them Iceplant but it is also known as Highway Ice Plant, Pigface or Hottentot Fig