Between 2013 and 2018, a manga came out showing Nyanta's culinary endeavours (and his recipes) in the world of Elder tale together with Serara. All six volumes are available online in japanese, unfortunately it doesn't appear a translation is coming very soon. We were able to find fan translations for the first three chapters of volume 1, for which we credit Anon (ch.1) and Subby-d Scanlations (ch.2 and ch.3)
You can read them here.