Rat in a Bun

Rat in a Bun with Rocket Fuel

Fond memories of my mother taking my brother and myself to Caffe L’affare when we were younger. We would always order the Rat in a Bun. A bratwurst sausage served in a sour dough bun topped with locally made Rocket Fuel sauce. Years later it was brought to my attention that this hot dog was actually called Brat in a Bun on the menu. To me this will always be a Rat in a Bun, it is really easy to prepare and simply delicious.

Two-zone for cooking bratwurst

Begin by preparing your grill for two-zone indirect heat and cook the bratwurst at 180°C.

The bakery at New World did not have any suitable sour dough buns this particular morning but they had some incredible fresh ciabatta buns that were perfect for my Rat in a Bun.

Slice the ciabatta buns down the middle and smear yellow american mustard on either side.

Once the bratwurst are cooked, place inside the ciabatta buns.

Top up with rocket fuel sauce and garnish with a little fresh parsley.

Serve immediately.

Make enough for seconds.


Rocket Fuel Sauce

Rat in a Bun

From at

Prep: Cook: Total:

Rat in a bun is simply a bratwurst in a ciabatta bread roll with crispy onions and rocket fuel sauce

You'll Need...

  • Bratwurst sausage
  • Ciabatta buns
  • Rocket Fuel Sauce
  • American Mustard


  1. Set up barbecue for two-zone indirect heat and heat to 180°C
  2. Cook the bratwurst to 70°C
  3. Slice the ciabatta buns in half and smear with american mustard
  4. Place the bratwurst into buns and top with rocket fuel sauce
  5. Serve immediately

Rat in a Bun



  1. Rachel · February 17, 2014

    I was force fed bratwurst on a very long vacation with an aunt who had no children and thought that 9 and 11 year olds regularly ate these…I swore them off after that but I’d be willing to give them another shot. They look great! And the buns look good too. You should try baking your own and see how they turn out…or let me teach you! 😉

    • OMFGBBQ · February 17, 2014

      I quite like a spicy bratwurst, we’re spoilt for choice here in Wellington with some fantastic gourmet butchery / sausage places where you can find all sorts of fantastic flavours, my favourites at the moment have been pork & fennel or pork & watercress.

      I will have to take you up on the teaching me to make my own buns – the more that I can make myself, the better these recipes will be.

      Thanks for visiting 🙂

  2. Kathi @ laughingspatula.com · February 17, 2014

    I love Brats! We have a wonderful place in Seattle called Uli’s at the Pike Place Market – a brat and a beer with the bums is my kind of Saturday morning! Your pictures are fantastic – like wow!

    • OMFGBBQ · February 17, 2014

      A brat and a beer sounds like my kind of Saturday morning as well! I’m already looking forward to when we next have hot dogs. I have a bunch of great home brewed beer to accompany them 😀

      Thanks for visiting.

  3. Nila @ The Tough Cookie · February 17, 2014

    Hi Scott, I thought I’d pop by and say ‘hello’ 🙂

    These ‘rats’ looks delicious! I don’t barbecue a lot, but with summer on it’s way (here on the Northern hemisphere) I thought it was about time to get some inspiration!

    I’m definitely going to make these! Probably with some homemade buns too. And I will also definitely serve them as ‘Rat in a Bun’! Too funny 🙂

    • OMFGBBQ · February 17, 2014

      Thanks for stopping by, hello!

      I can’t wait until you have some bbq weather and give these a go – what buns will you make yourself to serve these in? I really want to give my own buns a go!

      • Nila @ The Tough Cookie · February 17, 2014

        Hi Scott,

        I’m not sure, but I would probably go for some sort of baguette, because I think a hard crust would go really well with the bratwursts. Maybe I would make a little onion topping too by brewing a sliced onion in a little ale, or something 🙂 I don’t think I can get my hands on the Rocket Fuel sauce…

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