I think this question is a good one but it might be a little bit too large and too complex to answer it like that. For example, one time use items are pretty easy to 3D print as you don't have to worry about the second problem (which is a very big problem on its own), for the first problem you could use food safe filaments and be good to go. Could you break it down a little bit please? Do you want to know about tools that you can put in the dishwasher?

Are tools supposed to be used in a hot environment (stove, oven, etc.), for example a soup ladle, or in a cold environment (freezer, fridge, etc.)? Without more specific information, the answer to your question would be "it depends" as you can 3D print some things used for cooking but not everything is recommended.

@Zerotime PLA starts getting soft at 60C so the limitation is basically room temperature. one time use seems like it would be really costly because it takes so long to print.