Rye sourdough baguettes

Rye starter

• 100 g filtered water
• 100 g rye flour
• 100 g Mother sourdough starter (see Tips)

Dough

• 360 g baker's flour, plus extra to dust
• 40 g rye flour
• 2 tsp salt
• 220 g filtered water
• ice cubes (approx. 10)