@Livingoffcoffee, here is the recipe for my sourdough loaf.
Day 1, night:
Take starter out of fridge and feed it a total weight of 160g (flour + water).
Day 2, morning:
In a large reaction proof down (glass or ceramic), dissolve 150g of ripe starter into 500g of water.
Next, add 150g of strong wholemeal flour and 600g of strong white flour. Mix with hands or a wire kneader in bowl until all flour is incorporated into a shaggy blob. Cover and leave at room temperature for a minimum of 3 hours and a maximum of 5 hours.
In a small cup, combine 12g of salt with 20 g of water and pour over flour mixture. Use your finger to create deep intents and leave covered for 10 minutes. Stretch and fold the dough approximately 20 times to incorporate the salty slurry, then cover for 30 minutes.
Uncover bowl and do 4 quarter turn of stretching and folding, then recover for 30 minutes. Repeat 2 more times.
Cover and empty bowl onto a flowered surface and shape loaf. Place in benneton and cover. Leave at room temperature for 1 hour, then place in fridge for 12 (min) - 24 (max) hours.
Day 3:
Preheat oven to 220c with baking stone or baking dome in it (LaCloche or dutch oven). After oven has been at temperature for at least half an hour, reverse banneton onto baking stone/La Cloche and use a rame/very sharp blade to made slashes at the top of the loaf. Bake for 50 minutes. Remove from oven and cool.