Bring the rice wine vinegar to a simmer in a non-reactive saucepan with the sugar, salt and mustard seeds, stirring until the sugar has dissolved.
Layer the cucumber slices, dill and garlic cloves into a sterilised jar, packed tightly as possible.
Pour over the hot vinegar mixture. Top with additional vinegar, if required, to cover.
Seal jar and set aside to infuse. Pickles can be eaten as soon as half hour later but develop flavour with time.

Ingredients
Directions
Bring the rice wine vinegar to a simmer in a non-reactive saucepan with the sugar, salt and mustard seeds, stirring until the sugar has dissolved.
Layer the cucumber slices, dill and garlic cloves into a sterilised jar, packed tightly as possible.
Pour over the hot vinegar mixture. Top with additional vinegar, if required, to cover.
Seal jar and set aside to infuse. Pickles can be eaten as soon as half hour later but develop flavour with time.