Bodum
A design-led mainstream brand whose gooseneck kettle is mostly steel in the water path but not fully clean: a plastic steam-tube cap sits right at the max-fill line, a silicone seal wraps the base thermometer, and the basic model carries plastic lid accents. Notably, Bodum is more honest than its critics - the company documents that water stays off the plastic cap as long as you don't overfill, which is more disclosure than most kettle makers offer.
How clear are their specs?
The temperature-control model's retail spec names SUS304 steel and a silicone thermometer seal and explains the plastic brace sits above the fill line, but material detail varies by model and Bodum's own product pages are thin.
Products to avoid
Documented so you know what to skip — each still has a full breakdown and sources.
