Using a mini food processor, blend all the ingredients until smooth, add pinch sugar, salt and pepper to taste, pulse for a few seconds to combine
Refrigerate until ready to use
For the Salad
Wash and spin dry lettuce, pull into bite size pieces and toss in a large salad bowl
Pinch borage and nasturtium flowers from the plant, shake to dislodge dust, dirt and any little insects that might still be present. Flowers can be rinsed in cold water and drain on paper towels
Add flowers to cleaned greens, toss a handful of raspberries, blueberries and cucumber slices into the bowl right at the last minute, dress the salad and serve
Notes
Grow edible flowers from seed in containers. Start plants in small containers a few weeks before spring, transfer to a large container when the chance of freeze is past. Seeds can also be planted in soil.