This section is from the book "More Recipes For Fifty", by Frances Lowe Smith. Also available from Amazon: More Recipes For Fifty.
2 1/2 cups sugar 1/4 cup cornstarch 3/4 cup margarine
1 1/4 quarts boiling water
1 teaspoon salt
2 teaspoons lemon extract
Mix cornstarch and sugar; add to margarine, which has been stirred until creamy. Add boiling water, stirring constantly; boil five minutes, stirring often. Add salt and lemon extract. White corn syrup may be used in place of sugar. Mix cornstarch with cold water to paste; add three-fourths quart boiling water, and syrup; boil, and add remaining ingredients.
 
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