Some review on mass gainer:

1. Dymatize Super Mass Gainer 12lbs

Duration taken: 3 months (bought 3 packs of 12lbs)
Gain: 1.9kg
Effectiveness: ✮ ✮
Taste: ✮ ✮ (Dont like the taste. Very thick. After 3-4 hours in room temperature a sour mouth taste is noticeable)
Sweetness: ✮ ✮ (Quite sweet)
Price: ✮ ✮ ✮ ✮ ✮ (Cheapest. Around RM 150 from 11Street/Lazada. But not sure whether genuine product)

2. Gaspari Real Mass 12lbs

Duration taken: 1 month
Gain: 2kg
Effectiveness: ✮ ✮ ✮ ✮ ✮
Taste: ✮ ✮ ✮ ✮ ✮ (Best taste from all the brand i bought so far)
Sweetness: ✮ (This product have higher Sodium which contribute to better taste. The sweetest product among the other brand tested so far. Mix enough water should be fine)
Price: ✮ ✮ ✮ ✮ (Cheap. Around RM 179 from Muscle Mania Club. Genuine product. Would have stick to this if they still got stock)

3. Dymatize Elite Mass 10lbs

Duration taken: 2 weeks
Gain: 0.8 kg
Effectiveness: ✮ ✮ ✮ ✮ (2x more protein than other 3 products in same serving size)
Taste: ✮ ✮ ✮ (Acceptable. Quite different taste from Dymatize Super Mass)
Sweetness: ✮ ✮ ✮ ✮ (Low sweet)
Price: ✮ ✮ ✮ (Around RM 225from Nutrition Pro.)

4. Ronnie Coleman King Mass 15lbs

Duration taken: Just started
Gain: --
Effectiveness: --
Taste: ✮ ✮ ✮ (Does not taste like weight gainer. More like choc drinks. Compare to the other 3, this one is quite thin when dilute with water. Less foam, and de-foam very fast)
Sweetness: ✮ ✮ ✮ ✮ ✮ (Hardly any sweetness. Like Milo kosong. But does not taste as good as Milo la)
Price: ✮ ✮ ✮ ✮ (Cheap. RM 183 from 11 Street after using coupon -RM 30 - Malaysia Nutrition)

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All these supplements recommend for 2 servings per day. Technically i only take 0.5 servings per day, mix with full cream milk powder + 18g raw rolled oat. On paper this provide 730 kcal.

Other meal as usual (1,000 - 1,200 kcal). I do take 0.25 serving + full cream milk powder + 30g rolled oat on top of above mentioned as breakfast replacement though. (around 500 kcal)

My daily macro before workout should be around 1,500 - 1,700. From this intake, bodyweight has more or less maintain the same for past 15 years.

From the 0.5 serving supplements 730 kcal. I reckon that 200 kcal will burn away in swimming pool, and another 250 kcal in the 1hr gym session (daily). So the nett surplus i guess around 200 kcal (body might not absorb supplements fully, especially the raw rolled oat)

From these 200 kcal & 30g protein extra per day. 4.7kg over 5 months, with 0.5 servings, quite acceptable. Taking into consideration body fat @ 10.2%, waist line maintain the same, still can wear all the old pants in closet.

Bodyfat calculator

Funny fact, the weight gain more or less same with the extra protein daily intakes. (0.03kg x 150 days = 4.5kg)