Sauce that is full of flavor and a little space is an example of something that would be described as zingy.
adjectivezing·i·er, zing·i·est Informal
- Pleasantly stimulating: “The times are good. The living is easy. The vibes are zingy” (Saturday Review).
- Exceptionally attractive or appealing: a zingy gown.
(comparative zingier, superlative zingiest)
- Full of zest.