59019 V0210
Der Wiener
Roaster
User Guide
2 Der Wiener Roaster UG 59019 V0210
Preparation for Use
Wipe any dust or debris from the reective surface with a small
amount of glass cleaner and a soft cloth.
How it Works
Der Wiener Roaster works by
redirecting the sunlight that strikes
a large surface area (parabolic
reective surface) onto a
relatively small surface
(cooking tube). The
shiny, mirror-like surface
reects most of the
light energy. Its curved
shape directs the light
toward the cooking
tube. The cooking tube’s
dull black metal material
absorbs most of the light
energy, which raises the
temperature inside the tube.
Obviously, bright, sunny days will work best with Der Wiener
Roaster. Cooking times range from ve to 30 minutes depending
on the temperature and brightness of the sunlight.
What to Cook
Der Wiener Roaster is designed to cook one or two standard-size
hot dogs. Plump or jumbo-style hot dogs should not be used
because they may swell and get stuck in the tube.
Cooking with Der Wiener Roaster*
1. Wrap two standard-size hot dogs in aluminum foil. Do not
use excessive foil as the hot dogs will be too bulky and will
get lodged in the tube.
Sunlight
Der Wiener Roaster UG 59019 V0210 3
2. Place the two foil-wrapped hot dogs in the cooking tube.
Place the cooking tube into the cooker by inserting it into the
hole on the side of the heat collection unit.
Caution: Though there is a shield over the cooking tube, be
very careful not to touch it. It is very hot and will burn.
3. Position the cooker so it is facing the Sun.
4. Notice the solar angle indicator
on the side of the unit. The unit
should be positioned and
angled so the sunlight shines
through the hole in the
front of the indicator and is
projected on the recessed
circle on the rear surface
of the indicator (see gure
at right). This will ensure the
cooker is positioned to optimize
the heat energy from the Sun’s rays.
Use the T-handle located on the side of the stand to secure
the heat collection unit at the proper angle.
5. Periodically check the hot dogs to make sure they don’t
overcook. To do so, remove the cooking tube – being very
careful not to touch its surface – and peer into the open end.
When the hot dogs are done, they will be somewhat plumper
than before and you will smell their aroma.
6. When the hot dogs are done, remove them from the tube by
turning the tube upside down. You may need to gently tap
the tube on a table surface if the hot dogs plumped a great
deal during cooking. Unwrap the hot dogs, get some buns,
ketchup, mustard, and relish – and enjoy!
*Always use safe food preparation and handling practices.
4 Der Wiener Roaster UG 59019 V0210
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Activity Ideas
With some research or additional equipment, you can use Der
Wiener Roaster for other activities. Below are some examples.
• Research the appropriate formulas and calculate the
maximum BTUs that can be produced by Der Wiener Roaster.
• Using an infrared thermometer, measure and graph over
time the temperature of the cooking tube.
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