Comparing these four, Hakata is the lightest, with only a salty taste; Kagoshima is also light, but has a strong onion flavor; Kumamoto and Kurume soups are both thicker, and Kumamoto's sesame oil has a stronger flavor. As for whether you like the taste of sesame oil or green onion, it depends on your personal preference.
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就这四种比较下来，博多最清淡，只吃到咸味；鹿儿岛也清淡，但葱香味很浓；熊本和久留米的汤都比较浓厚，其中熊本的麻油味更重些。至于喜不喜欢麻油或葱的味道就看个人喜好了。