An Orthodox rabbi can help you with that.

Even those who don't have to cook for Shabbat, still need to do Eruv Tavshilin in order to light Shabbat candles (from an existing flame.)

Source: http://halocho.blogspot.com/2009/04/halocho-304-rare-mitzvah-eruv-tavshilin.html

If you have no need to do any Melacha for Shabbat at all, then you do not need to make Eruv Tavshilin - and if you still want to, you may not make a Bracha.

Source: My Rabbi

spicy or hot

Avi Weiss has written:

'The Riverdale eruv'

an Eruv is a legal loophole that allows traditional Jews to carry objects outdoors during the Sabbath. It is usually a wire, stretched around a neighborhood, town, or district, creating a "private place".

Jewish law forbids carrying objects from a private place into a public place during the Sabbath.