Put all the seeds, kernels, flakes and nuts in a baking pan lined with baking paper and mix well with a spoon. Add the salt and maple syrup and mix everything again very well. Gradually add the water to the mixture and stir the dough vigorously for at least 1 minute. If the mixture is too dry, add a little more water.
Press the dough flat in the baking pan and let it swell for 2-3 hours.
Bake the bread in a preheated oven at 175 ° C for 20 minutes. Then turn the bread out onto a wire rack and bake for another 35-40 minutes.