Buttermilk fried oysters with bread and butter pickles

For the oysters:

20 oysters, shucked

150g plain flour

150ml buttermilk

1tbsp hot sauce (plus extra to serve)

Sea salt

For the pickles:

2 cucumbers

1 tsp coriander seeds

1/2tsp ground turmeric

1/2tsp salt

175g caster sugar

175ml apple cider vinegar