- If whole trout can't be found for the forelle mit sauerampfersosse, skin-on fillets can be substituted instead. For a primer on buying and storing whole fish, see our guide. For instructions on filleting a fish yourself, see our step-by-step technique.
- If you don't have a potato ricer, you can press the dough for the spinatknöpfli through the holes in a colander.
- Crisp, subtly fruity kölsch pairs wonderfully with this bright, fresh meal; read more about Cologne, Germany's signature beer in our story Gold Standard.
- For more about Green Thursday and its traditions, see Nadia Hassani's story Seeing Green from our April 2014 seafood issue.