diff --git a/app/database.py b/app/database.py
index 2b7d139..98adb42 100644
--- a/app/database.py
+++ b/app/database.py
@@ -406,16 +406,50 @@ def calculate_tracked_meal_nutrition(tracked_meal, db: Session):
         'calories': 0, 'protein': 0, 'carbs': 0, 'fat': 0,
         'fiber': 0, 'sugar': 0, 'sodium': 0, 'calcium': 0
     }
-    # Base meal nutrition
-    base_nutrition = calculate_meal_nutrition(tracked_meal.meal, db)
-    for key in totals:
-        if key in base_nutrition:
-            totals[key] += base_nutrition[key]
     
-    # Add custom tracked foods
-    for tracked_food in tracked_meal.tracked_foods:
-        food = tracked_food.food
-        multiplier = tracked_food.quantity / food.serving_size if food.serving_size and food.serving_size != 0 else 0
+    # 1. Get base foods from the meal
+    # access via relationship, assume eager loading or lazy loading
+    base_foods = {mf.food_id: mf for mf in tracked_meal.meal.meal_foods}
+    
+    # 2. Get tracked foods (overrides, deletions, additions)
+    tracked_foods = tracked_meal.tracked_foods
+    
+    # 3. Determine effective foods
+    # Start with base foods
+    final_foods = {}
+    for food_id, mf in base_foods.items():
+        final_foods[food_id] = {
+            'food': mf.food,
+            'quantity': mf.quantity
+        }
+        
+    # Apply tracked changes
+    for tf in tracked_foods:
+        if tf.is_deleted:
+            # If deleted, remove from final_foods if it exists
+            if tf.food_id in final_foods:
+                del final_foods[tf.food_id]
+        else:
+            # Overrides or Additions
+            # This handles both:
+            # - Overriding a base food (replaces entry with same food_id)
+            # - Adding a new food (adds new entry with new food_id)
+            final_foods[tf.food_id] = {
+                'food': tf.food,
+                'quantity': tf.quantity
+            }
+            
+    # 4. Calculate totals
+    for food_id, item in final_foods.items():
+        food = item['food']
+        quantity = item['quantity']
+        
+        try:
+             serving_size = float(food.serving_size)
+             multiplier = quantity / serving_size if serving_size > 0 else 0
+        except (ValueError, TypeError):
+             multiplier = 0
+        
         totals['calories'] += (food.calories or 0) * multiplier
         totals['protein'] += (food.protein or 0) * multiplier
         totals['carbs'] += (food.carbs or 0) * multiplier
diff --git a/tests/test_detailed.py b/tests/test_detailed.py
index bd6e634..e49c654 100644
--- a/tests/test_detailed.py
+++ b/tests/test_detailed.py
@@ -11,11 +11,11 @@ import os
 from pathlib import Path
 
 # Create test database directory if it doesn't exist
-test_db_dir = "/app/data"
+test_db_dir = "./test_data"
 os.makedirs(test_db_dir, exist_ok=True)
 
 # Use the same database path as Docker container
-SQLALCHEMY_DATABASE_URL = "sqlite:////app/data/test_detailed.db"
+SQLALCHEMY_DATABASE_URL = f"sqlite:///{test_db_dir}/test_detailed.db"
 print(f"Using test database at: {SQLALCHEMY_DATABASE_URL}")
 
 test_engine = create_engine(SQLALCHEMY_DATABASE_URL, connect_args={"check_same_thread": False})
@@ -317,64 +317,4 @@ def test_detailed_serving_display_format(client, session):
 
     # Assert the serving info shows just "2.5g" without rounding or extra info
     # Current implementation rounds to 3g and shows full breakdown, so this will fail
-    assert '<div class="serving-info">2.5g</div>' in response.text
-def test_detailed_serving_display_format(client, session):
-    """Test that serving display shows just grams without rounding or serving breakdown."""
-    # Create food with small serving size to get decimal grams
-    food = Food(
-        name="Test Powder",
-        serving_size=2.5,
-        serving_unit="g",
-        calories=10,
-        protein=1.0,
-        carbs=0.5,
-        fat=0.1,
-        fiber=0.0,
-        sugar=0.0,
-        sodium=0.0,
-        calcium=0.0,
-        source="manual"
-    )
-    session.add(food)
-    session.commit()
-    session.refresh(food)
-
-    # Create meal
-    meal = Meal(name="Test Meal", meal_type="snack", meal_time="Snack")
-    session.add(meal)
-    session.commit()
-    session.refresh(meal)
-
-    # Add food to meal with quantity that results in decimal total_grams
-    meal_food = MealFood(meal_id=meal.id, food_id=food.id, quantity=2.5)  # 1 serving = 2.5g
-    session.add(meal_food)
-    session.commit()
-
-    # Create tracked meal via the endpoint
-    test_date = date.today()
-    response_add_meal = client.post(
-        "/tracker/add_meal",
-        data={
-            "person": "Sarah",
-            "date": test_date.isoformat(),
-            "meal_id": meal.id,
-            "meal_time": "Snack"
-        }
-    )
-    assert response_add_meal.status_code == 200
-    assert response_add_meal.json()["status"] == "success"
-
-    # Get detailed page for tracked day
-    response = client.get(f"/detailed?person=Sarah&plan_date={test_date.isoformat()}")
-    assert response.status_code == 200
-
-    # Assert the serving info shows just "2.5g" without rounding or extra info
-    # Current implementation shows full breakdown, so this will fail
-        # Assert the serving info shows just "2.5g" without rounding or extra info
-        # Current implementation shows full breakdown, so this will fail
-        import re
-        serving_pattern = r'<div class="serving-info">\s*2\.5g\s*</div>'
-        assert re.search(serving_pattern, response.text), f"Expected serving info '2.5g' but found: {response.text}"
-        # Also ensure no serving breakdown text is present
-        assert "servings of" not in response.text
     assert '<div class="serving-info">2.5g</div>' in response.text
\ No newline at end of file