Do This! Usability Test Planning: Pizza Night

Ok, so below is a picture of my "starting ingredients" for making pizza. The recipe obviously requires a pizza dough. The rest is up to whatever type of pizza we want to have. Our "test kitchen" goal was to make a sausage pizza, wondering how it would come out along with fresh cheese, homemade sauce and fresh tomatoes! 

Test goal: The user will prepare a pizza pie with homemade dough in less than one hour. (Usability attributes/measures: Attribute: Efficiency; Measure: Time on task).

Tasks:

Pizza Dough Basic Ingredients (this recipe makes one 14 inch pizza):

To mixing bowl:

1. Add 12 and 3/4 ounces of unbleached all purpose flour. (I weigh this with a scale.)
2. Add 1/2 teaspoon sugar.
3. Add 1 and 1/2 teaspoons salt.
4. Add 2 and 1/4 teaspoons (or two packets) of instant yeast.
5. Add 1 cup water
6. Add one tablespoon olive oil.
7. Mix all ingredients in a mixer bowl first by hand just for the dry and wet to come together, then transfer the bowl to an electric mixer with a dough hook. Set the mixer speed to 1 and mix dough for 8 minutes. (The mixture will form a ball and kneed for 8 minutes.)
8. With a little flour in hands, form the pizza dough into an even ball, then place the dough ball in a separate bowl with a towel over the bowl. (Let the dough rise in the covered bowl for about 30 minutes.)

Building the pizza

1. Set a pizza stone on 2nd or third rack of oven.
2. Set oven to 500 degrees
3. Roll out the pizza dough on the counter using some flour to prevent sticking.
4. Add favorite sauce, then cheese(s), toppings, like sliced tomatoes. We like sausage, so we added sausage to this pizza pie.
5. Move the pie to a pizza paddle. Using the paddle, carefully shift the pie onto the pizza stone.
6. Set timer for 11 minutes or to when you think the pizza looks done to your liking.
7. Serve the pizza -- time to chow!

What we learn from the user experience of making pizza:

1. Sometimes the dough is sticky, so you have to be flexible with the flour.
2. A good pizza stone is an important instrument to cooking the pizza.
3. You need certain good ingredients to make the pizza pie the best it can be (to your liking). We also make homemade sauce.
4. We are efficient with making the pizza -- it takes about an hour to bring things together and cook the pizza. Our efficiency level is based on practice and experience.

Learning about Task Lists:

When you think about it, isn't a usability task list really just a list of "basic" ingredients? There are certain things you must have to get started to build an understanding about user experience, while other things may be flexible, depending on what you want to discover about the technology interface and what you allow your participants to discover. Our goal may be to discover learnability or intuitiveness, for example. Design your task list with some flexibility so that your potential participants have a starting point but are allowed flexibility to learn the technology interface and subsequently find usability problems in the process.  

REMINDER: Please follow the directives given in the first main post of this forum. While I post an example HERE, your process likely will be different from mine, so please consider the test goals and usability measures that are unique to yours. Also, do not just post a recipe and a picture. Explain your process (as per the directives given). Tell us something about what you understand from this exercise about user testing planning.