pâte-sur-pâte
/ˌpɑːtsʊəˈpɑːt/ /ˌpatsʊəˈpat/(also pâte sur pâte, pate sur pate) Ceramics
noun
A method of relief decoration formed by applying layers of white slip upon unfired porcelain; an article produced in this way.
Origin
Late 19th century. Apparently from French pâte sur pâte, name of a method of decoration introduced at Sèvres in the mid 19th cent. (although attestations from this date are not available) from pâte + sur on + pâte.