Bring a pot of water to a boil and add the diced rhubarb. Blanch for exactly 1 minute to soften the rhubarb and reduce its raw, harsh acidity while maintaining some structure. Immediately transfer the rhubarb to an ice bath for 1 minute to stop the cooking process and set its texture. Drain well and pat completely dry on a clean towel—excess moisture will dilute your salsa's flavors.
While the rhubarb cooks, prepare all your fresh components with fine, uniform cuts. Dice the red bell pepper into small, consistent pieces; seed and mince the jalapeno finely to distribute heat evenly; mince the shallot and garlic as finely as possible so they dissolve slightly into the salsa rather than being chunky; hull and cut the strawberries into 1/2-inch pieces; and chop the fresh cilantro. Having everything prepped and ready ensures even flavor distribution and makes assembly seamless.
In a small bowl, whisk together the fresh lime juice, red wine vinegar, raw honey, and lime zest. The vinegar and lime juice provide the acidic backbone that brightens the salsa, while the honey adds subtle sweetness to balance the tartness of the rhubarb and acidity. I prefer using freshly squeezed lime juice and grating the zest just before mixing—it makes a noticeable difference in vibrancy compared to bottled versions.
In a medium bowl, combine the blanched and dried rhubarb from Step 1 with the prepared red bell pepper, jalapeno, shallot, strawberries, and cilantro from Step 2. Pour the dressing mixture from Step 3 over the fruit and vegetables, then add the sea salt. Stir gently but thoroughly to combine everything evenly, ensuring the dressing coats all the ingredients and the flavors begin to meld together.
Let the salsa rest for at least 2-3 hours at room temperature before serving, which allows the flavors to marry and develop a more cohesive taste. You can also serve it immediately if you prefer fresher, brighter flavors with less blending. I find that letting it rest about 1 hour strikes the best balance—the flavors meld nicely without the fruit becoming too soft.