EDIT : when more than 2 recipes selected

@@ -37,19 +37,16 @@ app.post('/hook', function (req, res) {
         if (error) {
             console.log(error);
         }
-
-        var index = 0;
-        var istrue = false;
+        var arr = new Array();
         var input_ingredients_list = message.text.split(" ");
         for (var i = 0; i < results.length; i++) {
             var ingredients_list = results[i].ingredients.split(", ");
             if (ingredients_list.filter(x => input_ingredients_list.includes(x)).length === input_ingredients_list.length) {
-                index = i;
-                istrue = true;
-                break;
+                arr.push(i);
             }
         }
-        if (istrue) {
+        if (arr.length != 0) {
+            var num = Math.floor(Math.random() * arr.length);
             request.post(
                 {
                     url: TARGET_URL,
@@ -61,15 +58,15 @@ app.post('/hook', function (req, res) {
                         "messages": [
                             {
                                 "type": "text",
-                                "text": `메뉴는 "${results[index].menu}" 입니다.`
+                                "text": `메뉴는 "${results[num].menu}" 입니다.`
                             },
                             {
                                 "type": "text",
-                                "text": `필요한 재료는\n${results[index].ingredients} 입니다.`
+                                "text": `필요한 재료는\n${results[num].ingredients} 입니다.`
                             },
                             {
                                 "type": "text",
-                                "text": `레시피\n${results[index].recipe}`
+                                "text": `레시피\n${results[num].recipe}`
                             }
                         ]
                     }