[rndgermandude]

Right, indeed. Glass jars (usually) have a deposit when they are "multi-use", while single-use plastic containers (and some single-use glass ones) do not. I lost many euros thanks to that, because I didn't know for a long time, and dumped my yogurt glass jars into the normal glass collection containers. It would have been easy to collect the deposits, since I am doing that for all the bottles I use anyway. :P