3poblano chiles, charred, sweated, peeled and cut into strips
1 1/2cupshalved and thinly sliced red onion
2tablespoonswhite wine vinegar
1tablespoonunseasoned rice vinegar
1/2teaspoonkosher or coarse sea salt
Bring a large pot of salted water to a rolling boil over medium-high heat. Drop in the red potatoes and cook for about 20 minutes, until they are cooked through and the tip of a knife goes in without much resistance, but the potatoes are not falling apart. When ready, drain into a colander. Once the potatoes are cool enough to handle, cut into halves.
In a large deep skillet or casserole, heat the olive oil over medium heat. Once it is hot, add the sesame oil. Stir in the red onion and cook for about 12 minutes, stirring once in a while, until they have completely softened and edges have begun to slightly brown. Incorporate the poblano chile rajas (strips), stir, cook for a minute or two.
Add the tarragon, allspice and sesame seeds and cook for a couple minutes. Pour in the white wine vinegar and rice vinegar, stir, cook for another minute and turn off the heat.
Place the potatoes in a large bowl, pour the onion, rajas, oil and vinegar mixture on top, and gently toss. Serve warm, at room temperature (how I like them the best) or cold.