Case Study: Kristen’s Cookie Company Key questions to answer before you launch the business: 1) How long will it take you to fill a rush order? If we consider that one order is a dozen‚ the flow time is 26 minutes for the first order. 2) How many orders can you fill in a night‚ assuming you are open four hours each night? (4 hours = 240 minutes) If we consider that one order is a dozen‚ it will take me: * For the first order: 26 minutes * For the second order: 20 minutes
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Case Report : Kristen’s Cookie Company (A1) [pic] Key Questions 1. To know the time it will take us to fill a rush order‚ we have to know how many dozens the rush order requires. If it is only one dozen‚ we need 6 minutes for the washing and mixing steps‚ 2 minutes for the spooning‚ 10 minutes for the whole baking‚ 5 minutes to cooling down‚ 2 minutes for the packing and 1 minute for the payment. That is to say : 26 minutes. If we consider the order requires N dozens : we always need
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Kristen’s Cookie Co 1. How long will it take for you to fill a rush order? It would take the team 26 minutes. The rush order itself of would require 7 steps as follows (the total cycle time is listed in parentheses): Clean Bowl‚ Add ingredients‚ and Mix (06:00 mins) Dish Cookies onto Tray* (02:00 mins) Put Cookies in Oven‚ Set Timer & Temp*(01:00 mins) Baking * (09:00 mins) Remove cookies and cool (05:00 mins) Bag cookies* (02:00 mins) Accept payment (01:00
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time by utilizing resources to its best.(for eg: Using electric mixer to its maximum limit‚i.e once to make a dough for 3 dozen cookies instead of using three times).Also process can be twisted according to convenience. As a result Cost-of-time per cookie will decrease. • Higher productive than previous system. Disadvantage: • Capital Investment: High capital investment to buy ingredients for both “pre-stock” and “fresh cookies”. • Risk & wastage: Higher financial & ‘time’ risk than conventional
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will produce and sell cookies by the dozen. Should you give any discount for people who order two dozen cookies‚ three dozen cookies‚ or more? If so‚ how much? Will it take any longer to fill a two- dozen cookie order than a one-dozen cookie order? You can only
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CHAPTER 4: FLOW TIME ANALYSIS 4.3 Solutions to the Problem Set Problem 4.1 [a] Draw a process flow diagram. [b]. The theoretical flow time is 36 minutes: There are three paths through the system: A: Take Order – Food – Deliver – Bill → 4 + 18 + 12 + 2 = 36 mins B: Take Order – Wine – Deliver – Bill → 4 + 4.8 + 12 + 2 = 22.8 mins C: Take Order – Cart – Deliver – Bill → 4 + 10 + 12 + 2 = 28 mins Path A is critical so the TFT is 36 minutes [c]. The flow time efficiency is 36/60
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receiving‚ packaging and payment receiving: 15 orders per hour. The bottleneck of the process would be oven‚ whose capacity is 6 orders per hour. Excluding the order receiving‚ mixing and spooning time of the first order (1+6+2=9 minutes) and the cookie cooling‚ packaging and payment receiving time of the last order (5+2+1=8 minutes)‚ we have 3.72 hours which allows us to fill in 22.3 orders in one night. The number of orders has to be an integer. So‚ we can fill in orders. 2. A) each order consists
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Process Flow Diagram Case Questions 1. How long will it take you to fill a rush order? Time taken to fill a rush order = MLT = 6 + 2 + 10 + 5 + 2 + 1 = 26 minutes 2. How many orders can you fill in a night‚ assuming you are open four hours each night? 4 hours per each night = 4 hours * 60 minutes = 240 minutes Cycle Time = The Duration of the bottleneck = (Setting thermostat and Timer) + (Baking Cookies) = 1 minute + 9 minute = 10 minutes Maximum
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5. Yes. If Kristen and roommate can only do their own job‚ the max order(order by order) they can process is 8 orders a night. But if they can cross-training‚ would 1. Receive order print and reply Roommate 1 minute/order Mix ingredients Kristen 6 minutes /max 3trays Spooning cookies onto tray Kristen 2 minutes/tray Cookies in oven Roommate 10 minutes/tray Cool down cookies
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Kristen’s Cookie Company Case Study and Analysis Forecasting and Operations Management Saint Mary’s College of California Executive MBA Program Jessica Marie – www.jessicamariemba.com Kristen’s Cookie Company Agenda Introduction and Preliminary Modeling Key Questions and Problems for Further Thought Recommendations for Improvement Q & A Session and Discussion Kristen’s Cookie Company Introduction Kristen’s Cookie Company Mission Statement: Born from a hunger to feed the student
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