Wash butter, pat, and form in circular piece. Add salt to flour, and work in lard with tips of fingers or case knife. Moisten to dough with cold water; ice water is not an essential, but is desirable in summer. Toss on board dredged sparingly with flour, pat, and roll out; fold in butter as for puff paste, pat, and roll out. Fold so as to make three layers, turn half-way round, pat, and roll out; repeat. The pastry may be used at once; if not, fold in cheese cloth, put in covered tin, and keep in cold place, but never in direct contact with ice. Plain paste requires a moderate oven. This is superior paste and quickly made.