Black bean paste (chunjang):

In Germany, you can easily find this product at the well-known Asian market 'Go Asia,' as well as at other Korean grocery stores. The brand is 'Jinmi Chunjang,' and the photo shows the 'Smoky Flavor' version, but there's also an 'Original Flavor' available. I've tried both and couldn't notice a significant difference—they both make delicious jjajang sauce. Any leftovers can be sealed and stored in the freezer for long-term use.