1 Stir in flour a little at a time until smooth, then remove from heat. 2  Add broth and milk a little at a time, stirring to keep mixture smooth. 3  Then, stir in mushrooms. 4  Return to heat and bring sauce to a gentle boil; stir constantly until sauce thickens.
A pound is equal to 16 ounces. If 20 slices equals 1 pound equals 16 ounces, then 1 slice is equal to 16 oz / 20 = .8 ounces. 1 pound = 16 oz = 20 slices. 16/20 oz per slice.
A slice of bread weighs 1 ounce, which is 28.34 grams. An ounce is the smallest standard American measurement of weight and is equal to 1/16th of a pound. Other items or collections of items which weigh 1 ounce include: 28 paper clips, five U.S. quarters, and a compact disc (CD). An ounce is also a measurement of volume. A liquid ounce is an American measurement that is equal to 29.57 milliliters, or 1/8th of a cup. Both liquid and solid ounces are a part of the United States customary units, a set of measurements which were derived from the British Imperial units.