DRESSING: Add rice vinegar in a small saucepan over medium heat and allow it to just come to a gentle boil. Add sugar and garlic cloves and let sugar dissolve; about 1 minute. Remove from stove, discard garlic cloves. Place the rice vinegar in a mason jar, add sesame oil, canola oil, soy sauce, and sesame seeds. Allow the dressing to come to room temperature; about 10-15 minutes. Place lid on the jar and shake until the dressing mixes together. If dressing separates, shake again to combine.