Perfect strawberries. Sugar.
Three things are indispensable in making strawberry bar-le-duc. The first is strong, steady sunshine, the second, hot platters or plates, the third plenty of window-glass.
The fruit should be of good flavor, the sugar pure. To every pound of fruit allow three cupfuls of sugar. Heat the sugar on plates in the oven, taking care not to let it melt or get too brown. It should be as hot as possible without melting.
Spread a thin layer of hot sugar over the bottoms of hot platters or deep plates, then a layer of fruit and then another layer of sugar.
Cover the platters with a clean sheet of window-glass and place outdoors in the hot sun or in a sunny window. If the fruit is outdoors it must be brought in when the sun sets and put in a dry place indoors.
Pack in tumblers and seal.
If the syrup is not thick, boil until clear and thickened, then pour in the glasses over the fruit.