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An ice cream laboratory guide

Chapter 26: EXERCISE NUMBER XVII PUNCHES AND LACTO
By W. W. Fisk
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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 XVII
PUNCHES AND LACTO

Freeze the following formulas as assigned and fill out the record blank on opposite page:

  • Punches:
  • No. 1.
  • 48 pounds water
  • 20 pounds sugar
  •  1 pound lemon juice
  •  1 quart brandy and rum mixed
  •  
  • No. 2.
  • 48 pounds water
  • 20 pounds sugar
  •  1 pound lemon juice
  •  1 quart orange juice
  •  2 quarts wine
  •  4 ounces gelatin in part of the water
  •  
  • No. 3.
  • 48 pounds water
  • 20 pounds sugar
  •  1 quart lemon juice
  •  1 quart raspberry juice
  •  1 quart grape juice
  • cloves, cinnamon, allspice and nutmeg to taste.
  •  
  • Lacto (From Iowa Station Bulletin 140)
  • 48 pounds good starter just nicely coagulated
  • 18 pounds sugar
  • 24 eggs, whites and yolks beaten separately
  •  2 quarts of grape juice
  • 1½ quarts lemon juice

Mix in the order given in the formula. Other flavors may be substituted for the grape juice.

EXERCISE XVII REPORT

Date_________________________ Receipt Number_______________
 
CREAM: ICE CREAM:
Age _______ Gallons _______
Acidity _______ Weight per gallon _______
Temperature _______  
  SWELL:
STANDARDIZATION: Gallons________ Per cent. _______
Per cent fat in cream _______  
Per cent fat in milk _______ FREEZING:
Standardize_______ pounds Freezer used _______
of cream testing _______ Pounds ice used _______
per cent fat.   Pounds salt used _______
TIME:
Of starting freezer _______
That mix reaches 30° F _______
Required to reach 30° F _______
That freezing is completed _______
Total time required to freeze _______
 
Give proportion.
x = the pounds _______  
Pounds of cream used _______ TEMPERATURE:
Pounds of milk used _______ Of mix entering freezer _______
  Of brine when mix reaches 30° F _______
MIX: Of ice cream when removed _______
Pounds _______ Of brine at this time _______
Gallons _______  
Weight per gallon _______  
Per cent fat it should test _______  
Was gelatin used? _______ By method 1, 2 or 3? _______
In milk or water? _______  
Remarks:
 
 
Comments on ice cream after it is hardened: