WeRead Powered by ReaderPub
An ice cream laboratory guide cover

An ice cream laboratory guide

Chapter 40: EXERCISE NUMBER XXIX TESTING SAMPLES OF GELATIN
Open in WeRead

About This Book

A laboratory manual guides students through the scientific manufacture of frozen desserts, combining equipment descriptions, sanitation practices, and stepwise laboratory exercises. It explains methods for standardizing mixes and testing fat and solids, the use of stabilizers, and principles of freezing, hardening, and measuring swell (overrun). Practical recipes and procedures cover plain, fruit, nut, custard, parfait, and molded products, ices and sherbets, and related preparations; supplemental exercises address microbial counts, gelatin testing, varying ingredients and processing treatments, judging criteria, and visits to commercial plants for applied observation.

EXERCISE NUMBER XXIX
TESTING SAMPLES OF GELATIN

Weigh 5 gram samples of gelatin into 100 cc. of cold water in beakers or jelly glasses. Allow it to soak over night. Then heat slowly, with stirring, to 80 degrees C.

Subject to the following tests and make report on opposite blank page.

1. Note the odor.

2. Determine the time required for 50 cc. to run from a pipette.

3. Determine the time required for the sample to gelatinize.

4. Turn the jelly out on to a plate and determine the relative resistance of the different samples to pressure by the finger.

Two or more students should be assigned to this exercise at a time, each having a different sample of gelatin. They should perform the tests together.

EXERCISE XXIX REPORT

  •  
  •  
  •  
  •  
  •  
  •  
  •