SPU 27
SPU 27 Problem Set 7
Due in TF’s homework box before class on Thursday, October 31st
You are encouraged to work in groups, but all submitted work must be your own. If you work with others, please note who they are.
Please type or write your answers on a separate sheet of paper. Your work must be organized and legible – if your TF can′ t understand what you wrote, they won′ t give you credit.
Show your work for derivations and calculations. Be sure to calculate all results fully
(don′ t leave numbers in fraction form, or in terms of pi, &c.) and to provide answers in the requested units, if applicable.
Equation of the Week: ϕ= ϕ
Vdispersed
Vtotal t Vdispersed
Vtotal
Description
Units
Volume fraction
Unitless
Dispersed phase (particles and droplets) volume
L
Total volume of the mixture
L
Time s 1
SPU 27
Problem Set 7
Page 2
Problem 1: Macaroni and Cheese (45 points)
This week we studied a few recipes for Macaroni and Cheese, suggested by Erika Chan, Bianca
Bamgade, Margaret Crane, and Sebastian Chiu. The secret to making a good Macaroni and Cheese is to achieve the correct consistency of the sauce, the theme for the week. These different recipes achieve a good Mac and Cheese in different ways.
Mouse’s Macaroni and Cheese
1/4 cup butter
2 tsp (6 g) all purpose flour
1 tsp mustard powder
1 tsp ground black pepper
2 cups milk
1 cup (230 g) American cheese, cubed
1 cup (230 g) Velveeta, cubed
1/4 cup bread crumbs
1 1/2 cups macaroni
From Allrecipes
1. Melt the butter over medium heat.
2. Blend in the flour, mustard powder, and pepper until smooth.
3. Slowly stir in the milk, beating out any lumps.
4. Add the American and processed cheeses, and stir constantly until the sauce is thick and smooth.
We will contrast this recipe with the simplest macaroni and cheese recipe imaginable – Kraft
Dinner. This recipe was developed in 1916 when James Kraft won a patent for inventing processed
cheese,
Due in TF’s homework box before class on Thursday, October 31st
You are encouraged to work in groups, but all submitted work must be your own. If you work with others, please note who they are.
Please type or write your answers on a separate sheet of paper. Your work must be organized and legible – if your TF can′ t understand what you wrote, they won′ t give you credit.
Show your work for derivations and calculations. Be sure to calculate all results fully
(don′ t leave numbers in fraction form, or in terms of pi, &c.) and to provide answers in the requested units, if applicable.
Equation of the Week: ϕ= ϕ
Vdispersed
Vtotal t Vdispersed
Vtotal
Description
Units
Volume fraction
Unitless
Dispersed phase (particles and droplets) volume
L
Total volume of the mixture
L
Time s 1
SPU 27
Problem Set 7
Page 2
Problem 1: Macaroni and Cheese (45 points)
This week we studied a few recipes for Macaroni and Cheese, suggested by Erika Chan, Bianca
Bamgade, Margaret Crane, and Sebastian Chiu. The secret to making a good Macaroni and Cheese is to achieve the correct consistency of the sauce, the theme for the week. These different recipes achieve a good Mac and Cheese in different ways.
Mouse’s Macaroni and Cheese
1/4 cup butter
2 tsp (6 g) all purpose flour
1 tsp mustard powder
1 tsp ground black pepper
2 cups milk
1 cup (230 g) American cheese, cubed
1 cup (230 g) Velveeta, cubed
1/4 cup bread crumbs
1 1/2 cups macaroni
From Allrecipes
1. Melt the butter over medium heat.
2. Blend in the flour, mustard powder, and pepper until smooth.
3. Slowly stir in the milk, beating out any lumps.
4. Add the American and processed cheeses, and stir constantly until the sauce is thick and smooth.
We will contrast this recipe with the simplest macaroni and cheese recipe imaginable – Kraft
Dinner. This recipe was developed in 1916 when James Kraft won a patent for inventing processed
cheese,