For the avocado cheese, place the avocado flesh and cheese in a food processor and blend to a smooth paste. Remove to a bowl, add the lemon juice and season to taste. Cover the bowl with clingfilm and refrigerate until required.
Heat 150 ml water with the vinegar, garlic, lemon juice, coriander seeds and thyme in a pan, bring to the boil and simmer for 15 minutes. Add half the oil. Add