This is a lil fancier type of guacamole.
Standard recipes omit the mechanical transformation that occurs when aromatics hit a hot grate. Raw onions release sharp sulfur compounds. Exposing red onion, jalapeño, and cherry tomatoes to low heat caramelizes natural sugars, softening their bite before they ever meet the fruit.
Avocados react poorly to mechanical over-processing. Mashing a small portion of the fruit with sour cream creates a rich base suspension. Fold remaining cubed avocado in gently at the end to preserve distinct structural integrity. Acid from fresh lime juice halts enzymatic browning by lowering the pH level. Chill the mixture for thirty minutes to allow fat molecules to firm up and flavors to meld.