I love seeds in my bread, so when I found some really good linseeds in the local nut shop, I used it immediately in my beloved sourdough.
It turned out to be a huge loaf, but it's just the normal combination:
100g 100% hydrated sourdough starter
40 ml olive oil, extra virgin
200g plain flour, prefer bread or strong flour
150g whole meal flour
50g linseeds (could be more or less, I didn't measure to be exact, approx)
1.5 tsp salt
It smells good, an awesome loaf.
If you are interested in the starter, this is my earlier post in regards to the starter and baking of my first several batches of sourdough: Sourdough Wholemeak Ciabatta