Table I. - Boiling Point Of Water And Average Barometer Readings For Different Altitudes

Altitude

Temperature of steam

Corrected

Average barometer , readings

Degrees F.

Degrees C.

Inches

Millimeters

Sea level...................

212.0

100.0

29.9

760

2000 feet..................,

208.3

97.9

27.8

706

4000 feet...................

204.6

95.9

25.8

655

6000 feet...................

201.1

93.9

24.0

610

8000 feet...................

197.6

92.0

22.3

566

10,000 feet.................

194.0

90.0

20.7

526

Table II. - Useful Temperatures

.

Degrees Centigrade

Degrees Fahrenheit

Mercury freezes................................

-39

-38

Freezing cold storage...................

-18

0

0

+32

Water freezes..................................

0

32

Danger of frost.................................

+4

39

Household refrigerator, proper temperature.........

7 13

45 55

Churning......................................

i 11

17

52 62

Gymnasium, or rooms where occupants are actively engaged in physical work or exercise.............

13

55

Ripening of cream...............................

18 21

65 70

Rooms where occupants are not exercising..........

20 21

68 70

Normal temperature of the human body determined by thermometer under the tongue..................

37

98.6

Incubator temperature..........................

39.4

103

■ •

Degrees Centigrade

Degrees Fahren-heit

High fever, temperature measured as above........

40.6

105

Pasteurizing milk .............................

63

145

Pasteurizing milk (flash process)..................

71

160

Water boils at normal pressure....................

100

212

Plain sugar sirups:

For sirup, 11 pounds to the gallon.............

104

219

For fondant candies .........................

113

115

236 240

For fudge and other candies of like nature......

115

240

For taffy and like hard candies to be pulled ....

149

300

For clear brittle candies, peanut brittle, etc.....

154

310

For almond and walnut brittle................

157

315

Melting point of common soft solder...............

185

365

Oven temperatures for baking:

Custards, meringues, pies, puddings, etc........

Sponge cake, bread, gingerbread, plain cake, and

Parker House rolls, popovers, and biscuits.......

Biscuit and pastry ..........................

121

177 177

204 204 232 232 287

250 350 350 400 400 450 450 550

Melting point of lead............................

327

621

Melting point of aluminum............

659

1218

Table III. - A Table Of Temperatures

Process

Degrees Centigrade

Degrees Fahrenheit

Freezing of fruit ices (temperature of medium)......................

-5 to -8

23 to 18

Freezing of water................

0

32

Whipping of cream .................

3 to 10

37 to 50

Butter-making ....................................

15 to 16

60

Raising of bread (temperature of room) ........................

26 to 40

79 to 104

* Williams, Anna W., and Gray, Cora E., Cooking Temperatures, Bull. 47, Univ. of 111.

Process

Degrees Centigrade

Degrees Fahrenheit

Cheese-making...................

37 to 60

98.6 to 140

(Depends upon acidity)

Coagulation of albumin...........

Begins 56; completes 71

133 to 160

Simmering of water...............

82 to 99

180 to 210

Soft custards....................

82 to 84

179 to 183

Double boiler, top part...........

89 to 94

192 to 201

Boiling water at sea level.........

100

212

Jellies (boiling point of water 100° C.)

103

185

Sugar cookery (boiling point of water 100° C.) Fondant....................

113

235

Fudge frosting, boiled........

111

232 .

1 egg white to 1 cup sugar.

113 to 115

235 to 239

2 egg whites to 1 cup sugar

117

243

1 egg white to 1 cup of dark brown sugar.........

125

257

1 egg white to 3/4 cup of dark brown sugar, 1/4 cup

122

252

* Roasting of meat

Temperature of oven

First 15 minutes.........

250

450

Remainder of time.......

175

347

Temperature of meat interior Rare done...............

46.5 to 60

115.7 to 140

Medium................

60 to 70

140 to 158

Well done...............

70 to 80

158 to 176

Deep-fat frying. Temperature of fat for

Uncooked foods..............

175 to 190

347 to 374

Cooked foods................

185 to 205

365 to 401

Cold, wet, uncooked foods.....

190 to 195

374 to 383

Baking. Temperature of center of oven for

Sponge cakes................

175 to 190

347 to 374

Angel food cakes.............

150 to 170

302 to 338

Souffles (surrounded by water).....

200

392

Bread.......................

180 to 220

356 to 428

* Sprague, Elizabeth, and Grindley, H. C, " A Precise Method of Roasting Beef," Univ. of 111. Bull., Vol. IV, No. 19.

Process

Degrees Centigrade

Degrees Fahrenheit

Butter cakes

Loaf....................

190

374

Layer...................

210.

410

Muffins.....................

220 to 235

428 to 455

Parkerhouse rolls.............

235

455

Baked potatoes..............

235

455

Baking powder biscuit........

235 to 240

455 to 464

Popovers....................

235 to 200

455 to 392

* Pastry.....................

240

464

*Sprague, Elizabeth, "Studies of Methods in Food Preparation," Journal of Home Economics, Vol.III, No. 5, p. 446.