The bread is a sop. You can’t sop with toast; that’s insane. The “undefinable brown liquid” is stock and is common across the world’s cuisines. If you season the potatoes further, assuming they’re lightly salted, you run the risk of overseasoning the dish (they’re sitting next to a very rich stew). You’re just making these up now.

I cannot fathom how it tastes

Then don’t say anything! Easy peasy!

Edit to add: The only problem as it were with this food is that it lacks colour, so of course you wouldn’t serve this at a restaurant. But when’s the last time anyone gave a fuck about colour when bashing out tea on a thursday eve?